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ultrasound

Practice targeted AMC-style multiple-choice questions on ultrasound.

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Contrast-enhanced ultrasound of encephaloid hepatocellular carcinoma
Image by R. Badea, Simona Ioanitescu CC BY 3.0 · Source

A 68-year-old male with known Hepatitis B related cirrhosis and a history of alcohol excess presents for routine surveillance. His alpha-fetoprotein (AFP) level, which has been stable at 15 ng/mL for the past two years, is now noted to be 185 ng/mL. A screening ultrasound performed three months prior was reported as showing diffuse parenchymal changes consistent with cirrhosis but no focal lesions. Due to the elevated AFP, a repeat ultrasound was performed, which identified a 2.5 cm nodule in segment VIII. To further characterise this lesion, a contrast-enhanced ultrasound (CEUS) was performed, and the images provided are representative findings from this study. The patient has well-compensated cirrhosis (Child-Pugh A) and no significant comorbidities. His liver function tests are within normal limits except for a slightly elevated GGT. Given the clinical context and the findings demonstrated in the provided images, what is the most appropriate next step in the management of this patient?

A. Discuss the case in a multidisciplinary team meeting to determine suitability for curative therapy.
B. Perform a core needle biopsy of the lesion for histological confirmation.
C. Proceed directly to surgical resection of the lesion.
D. Repeat the contrast-enhanced ultrasound in 3 months.
E. Initiate systemic chemotherapy with Sorafenib.
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An ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound, this ultrasound is for a 3 year old boy with intestinal intussusception.
Image by Frank Gaillard CC BY-SA 3.0 · Source

A 3-year-old boy presents with sudden onset intermittent severe abdominal pain, vomiting, and lethargy. On examination, he is pale and has a palpable mass in the right upper quadrant. An ultrasound is performed (image provided). Based on this finding, what is the most appropriate next step in management?

A. Upper gastrointestinal endoscopy
B. Pneumatic or hydrostatic enema reduction
C. Immediate surgical exploration
D. Abdominal CT scan with contrast
E. Observation with serial abdominal exams
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Ultrasonographic picture taken from a patient with left ureteral stone with hydronephrosis, created in Taiwan
Image by morning2k CC BY 2.5 · Source

A 48-year-old woman presents with acute onset severe left flank pain radiating to the groin, associated with nausea. She denies fever or dysuria. Vitals are stable. Urinalysis shows haematuria. Serum creatinine is 75 µmol/L. An ultrasound is performed. Considering the clinical presentation and the findings demonstrated in the provided image, which of the following is the most appropriate next diagnostic step?

A. Prescribe tamsulosin and arrange outpatient follow-up.
B. Repeat the renal ultrasound in 24 hours.
C. Perform a retrograde pyelogram.
D. Arrange a non-contrast CT scan of the kidneys, ureters, and bladder.
E. Obtain a plain abdominal X-ray (KUB).
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An ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound, this ultrasound is for a 3 year old boy with intestinal intussusception.
Image by Frank Gaillard CC BY-SA 3.0 · Source

A 3-year-old boy presents to the emergency department with a 24-hour history of intermittent, severe abdominal pain. His mother reports episodes where he cries inconsolably, draws his knees to his chest, and then seems to recover briefly before the pain returns. He has also passed a stool mixed with mucus and blood, described as 'red currant jelly'. On examination, the child is afebrile, but appears pale and lethargic. Abdominal palpation reveals a sausage-shaped mass in the right upper quadrant. An ultrasound is performed, and a representative image is shown. Assuming the diagnosis is confirmed, what is the MOST appropriate next step in management?

A. Stool culture and sensitivity testing
B. Oral rehydration and analgesia
C. Air enema under radiological guidance
D. Intravenous antibiotics and observation
E. Surgical resection of the affected bowel segment
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A 1-month-old baby has a palpable mass in the right flank and abdominal swelling. An ultrasound reveals a solid mass in the kidney. What is the most likely diagnosis?

A. Neuroblastoma
B. Polycystic kidney disease
C. Hydronephrosis
D. Renal cell carcinoma
E. Wilms tumor
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Ultrasonographic picture taken from a patient with left ureteral stone with hydronephrosis, created in Taiwan
Image by morning2k CC BY 2.5 · Source

A 45-year-old male presents to the ED with left flank pain radiating to his groin. He reports nausea but denies fever or dysuria. Vitals are stable. A point-of-care ultrasound is performed, with the image shown. Assuming no contraindications, what is the MOST appropriate next step in management?

A. Prescribe oral tamsulosin and discharge home
B. Insert an indwelling urinary catheter
C. Consult urology for emergent stent placement
D. Order a non-contrast CT scan of the abdomen and pelvis
E. Administer intravenous ketorolac
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An ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound, this ultrasound is for a 3 year old boy with intestinal intussusception.
Image by Frank Gaillard CC BY-SA 3.0 · Source

A 3-year-old boy presents to the emergency department with a 12-hour history of sudden onset, severe, colicky abdominal pain, drawing his legs up, and non-bilious vomiting. His parents report he has been listless between episodes and had a small amount of red jelly-like stool earlier. Vitals: T 37.2°C, HR 110, RR 24, BP 95/60, Sats 98% on air. Abdominal examination reveals tenderness in the right upper quadrant and a palpable mass. Bowel sounds are diminished. A point-of-care ultrasound is performed. Based on the clinical presentation and the findings demonstrated in the provided ultrasound image, what is the most appropriate initial management step for this patient?

A. Initiate intravenous antibiotics and observe for improvement.
B. Proceed directly to urgent surgical exploration.
C. Attempt pneumatic or hydrostatic reduction under fluoroscopic guidance.
D. Administer opioid analgesia and arrange for outpatient follow-up.
E. Obtain a contrast-enhanced CT scan of the abdomen and pelvis.
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Ultrasonographic picture taken from a patient with left ureteral stone with hydronephrosis, created in Taiwan
Image by morning2k CC BY 2.5 · Source

A 45-year-old male presents to the emergency department with sudden onset severe left flank pain radiating to the groin. He reports some nausea but no vomiting. His temperature is 37.5°C, pulse 88 bpm, BP 130/80 mmHg, respiratory rate 16/min, oxygen saturation 98% on room air. On examination, he has significant left costovertebral angle tenderness. Urinalysis shows microscopic haematuria and trace leukocytes. His creatinine is 90 µmol/L (baseline unknown). An ultrasound of the kidneys is performed, shown in the image. Based on the clinical presentation and the finding shown in the image, which of the following developments would most strongly necessitate urgent urological intervention?

A. Discovery of bilateral hydronephrosis on repeat imaging.
B. Passage of a small stone fragment.
C. Persistence of severe pain despite adequate analgesia.
D. Development of fever and rigors.
E. Increase in serum creatinine to 150 µmol/L.
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Ultrasonographic picture taken from a patient with left ureteral stone with hydronephrosis, created in Taiwan
Image by morning2k CC BY 2.5 · Source

A 38-year-old man presents with sudden onset severe left flank pain radiating to the groin, associated with nausea. He is afebrile, blood pressure 140/90 mmHg, heart rate 95 bpm. Urinalysis shows microscopic haematuria. Serum creatinine is 80 µmol/L. An ultrasound is performed. Considering the clinical presentation and the findings demonstrated in the provided image, which of the following best explains the mechanism of the patient's pain?

A. Spasm of the renal artery
B. Increased pressure within the renal pelvis and collecting system
C. Ischaemia of the renal medulla
D. Distension of the renal capsule due to oedema
E. Inflammation of the renal parenchyma
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A 28-year-old woman presents with a palpable lump in her left breast, noticed two weeks ago. It feels smooth, mobile, and non-tender. No family history of breast cancer. On examination, a 2cm, firm, mobile mass is noted. Considering Australian guidelines for a palpable breast lump in this age group, what is the most appropriate initial investigation?

A. MRI breast
B. Core biopsy
C. Mammography
D. Ultrasound scan
E. Fine needle aspiration cytology
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Ultrasonographic picture taken from a patient with left ureteral stone with hydronephrosis, created in Taiwan
Image by morning2k CC BY 2.5 · Source

A 35-year-old male presents with left flank pain and dysuria. An ultrasound is performed. What is the MOST appropriate next step in management?

A. Discharge with analgesia and follow-up
B. Increase oral fluid intake and reassess in 24 hours
C. Refer for immediate nephrectomy
D. Non-contrast CT of the abdomen and pelvis
E. Administer intravenous antibiotics
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A 28-year-old woman presents with a palpable lump in her left breast, noticed two weeks ago. It is slightly tender, especially before her period. On examination, it is mobile, firm, and about 2 cm. No skin changes or nipple discharge. What is the most appropriate initial investigation?

A. Ultrasound of the breast
B. Observation and review in 3 months
C. MRI of the breast
D. Fine needle aspiration cytology (FNAC)
E. Mammography
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Pyloric stenosis as seen on ultrasound in a 6 week old
Image by Dr Laughlin Dawes CC BY-SA 4.0 · Source

A 6-week-old male infant presents with increasing frequency of non-bilious vomiting after feeds for the past week. He is otherwise well, afebrile, and has wet nappies. On examination, he is alert and interactive. Abdominal examination is unremarkable. Vitals are stable. You order an ultrasound, which is shown. Based on the clinical presentation and the provided image, what is the most appropriate immediate next step in management?

A. Obtain an upper gastrointestinal barium study.
B. Discharge home with advice on feeding techniques and follow-up.
C. Proceed directly to surgical pyloromyotomy.
D. Initiate intravenous fluid resuscitation and correct electrolyte abnormalities.
E. Prescribe a proton pump inhibitor and trial smaller, more frequent feeds.
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An ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound, this ultrasound is for a 3 year old boy with intestinal intussusception.
Image by Frank Gaillard CC BY-SA 3.0 · Source

A 3-year-old boy presents with sudden onset, intermittent, severe abdominal pain, vomiting, and lethargy. On examination, he is pale and has a palpable mass in the right upper quadrant. Vitals are stable. An ultrasound is performed, shown above. Considering the clinical presentation and the findings in the image, what is the most appropriate initial management step?

A. Admit for intravenous fluids and serial abdominal examinations
B. Perform an upper gastrointestinal series with small bowel follow-through
C. Obtain a contrast-enhanced CT scan of the abdomen and pelvis
D. Pneumatic or hydrostatic reduction under fluoroscopy
E. Urgent laparotomy for manual reduction
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Ultrasonographic picture taken from a patient with left ureteral stone with hydronephrosis, created in Taiwan
Image by morning2k CC BY 2.5 · Source

A 45-year-old male presents to the emergency department with sudden onset severe left flank pain radiating to the groin. He reports some nausea but no vomiting. His temperature is 37.5°C, pulse 88 bpm, BP 130/80 mmHg, respiratory rate 16/min, oxygen saturation 98% on room air. On examination, he has significant left costovertebral angle tenderness. Urinalysis shows microscopic haematuria and trace leukocytes. His creatinine is 90 µmol/L (baseline unknown). An ultrasound of the kidneys is performed, shown in the image. Based on the clinical presentation and the finding shown in the image, what is the most appropriate immediate next step in management?

A. Admit for observation, serial renal function tests, and pain management.
B. Arrange urgent non-contrast CT scan of the kidneys, ureters, and bladder.
C. Arrange urgent flexible cystoscopy and retrograde pyelography.
D. Administer intravenous fluids, opioid analgesia, and prescribe tamsulosin for medical expulsive therapy.
E. Urgent urology consultation for consideration of upper tract decompression.
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A 42-year-old woman presents with a new, firm, mobile lump in her left breast, noticed two weeks ago. She is otherwise well. What is the most appropriate initial investigation?

A. Fine needle aspiration cytology (FNAC) of the lump
B. Reassurance and review in 3 months
C. Ultrasound of the breast only
D. Core biopsy of the lump
E. Mammogram and ultrasound of the breast
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Ultrasonographic picture taken from a patient with left ureteral stone with hydronephrosis, created in Taiwan
Image by morning2k CC BY 2.5 · Source

A 45-year-old male presents to the ED with left flank pain radiating to his groin. He reports nausea but no vomiting. Vitals are stable. A focused ultrasound is performed, as shown. What is the MOST appropriate next step in management?

A. Discharge with analgesics and follow-up with urology
B. Administer IV antibiotics
C. Non-contrast CT of the abdomen and pelvis
D. Increase oral fluid intake and reassess in 2 hours
E. Refer for immediate surgical intervention
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Hypertrophic pyloric stenosis
Image by Adityagupta95 CC0 1.0 · Source

A 6-week-old male infant presents with a 2-week history of progressively worsening projectile non-bilious vomiting after feeds. He has lost weight and appears lethargic. Initial bloods show a hypochloremic, hypokalaemic metabolic alkalosis. After fluid resuscitation, the image is obtained. What is the most appropriate definitive management for this patient?

A. Further imaging with abdominal ultrasound
B. Placement of nasogastric tube for gastric decompression
C. Trial of medical management with atropine
D. Discharge home with thickened feeds and anti-reflux medication
E. Surgical pyloromyotomy
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Ultrasonographic picture taken from a patient with left ureteral stone with hydronephrosis, created in Taiwan
Image by morning2k CC BY 2.5 · Source

A 38-year-old woman presents with acute onset left flank pain, radiating to the groin. She reports dysuria and hematuria. Vitals: HR 88, BP 130/80, Temp 37.1°C. A bedside ultrasound is performed, as shown. What is the MOST appropriate next step?

A. Non-contrast CT of the abdomen and pelvis
B. Refer for immediate nephrostomy tube placement
C. Repeat ultrasound in 24 hours
D. Discharge with analgesics and follow-up with urology
E. Administer IV antibiotics
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Ultrasonographic picture taken from a patient with left ureteral stone with hydronephrosis, created in Taiwan
Image by morning2k CC BY 2.5 · Source

A 38-year-old woman presents with sudden onset, severe left flank pain radiating to her groin. She reports associated nausea but denies fever or dysuria. On examination, she is afebrile, blood pressure 125/75 mmHg, heart rate 80 bpm. Urinalysis shows microscopic haematuria. Serum creatinine is 80 µmol/L. An ultrasound is performed. Considering the clinical presentation and the findings demonstrated in the provided image, which of the following is the most likely underlying mechanism causing the patient's pain?

A. Stretching of the renal capsule due to rapid kidney enlargement from a mass.
B. Direct irritation of nerve endings in the bladder wall.
C. Ischaemia of the renal cortex due to vascular compromise.
D. Inflammation of the renal parenchyma due to infection.
E. Increased pressure within the renal pelvis and ureter proximal to an obstruction.
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Pyloric stenosis as seen on ultrasound in a 6 week old
Image by Dr Laughlin Dawes CC BY-SA 4.0 · Source

A 6-week-old male infant presents to the emergency department with a 2-week history of progressively worsening non-bilious vomiting, which has become projectile over the past few days. His parents report he is feeding eagerly but vomits most feeds shortly after completion. He has had fewer wet nappies than usual and appears more lethargic. On examination, he is irritable but consolable. His weight is below the 3rd percentile, having dropped from the 10th percentile at birth. Vital signs are: Temperature 36.8°C, Heart Rate 155 bpm, Respiratory Rate 40 bpm, Blood Pressure 85/50 mmHg, Oxygen Saturation 98% on room air. Capillary refill time is 3 seconds. Abdominal examination reveals a soft, non-distended abdomen with active bowel sounds; no palpable masses are appreciated. Initial blood gas shows pH 7.52, pCO2 40 mmHg, Bicarbonate 32 mmol/L, Na+ 132 mmol/L, K+ 3.0 mmol/L, Cl- 88 mmol/L. A point-of-care ultrasound was performed, and the image provided was obtained. Considering the clinical presentation and the findings demonstrated in the image, what is the most appropriate immediate next step in the management of this infant?

A. Administer intravenous ondansetron and observe for improvement in vomiting.
B. Discharge home with instructions for smaller, more frequent feeds and review by the general practitioner in 24 hours.
C. Insert a nasogastric tube for continuous drainage and commence total parenteral nutrition.
D. Obtain an urgent upper gastrointestinal contrast study to confirm the diagnosis and assess for malrotation.
E. Initiate intravenous fluid resuscitation with 0.9% sodium chloride and potassium chloride supplementation, and arrange urgent surgical consultation.
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A 70-year-old man with a history of atrial fibrillation presents with sudden onset of severe pain, pallor, and coldness in his left leg. On examination, the leg is cool below the knee, distal pulses are absent, and sensation is diminished. Which of the following is the most appropriate initial diagnostic investigation?

A. Venous duplex ultrasound of the limb
B. Serum lactate level
C. CT angiography of the limb
D. Arterial duplex ultrasound of the limb
E. ECG
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Pyloric stenosis as seen on ultrasound in a 6 week old
Image by Dr Laughlin Dawes CC BY-SA 4.0 · Source

A 6-week-old male infant presents to the emergency department with a 2-week history of progressively worsening non-bilious vomiting, which has become projectile over the past few days. His parents report he is feeding eagerly but vomits most feeds shortly after completion. He has had fewer wet nappies than usual and appears more lethargic. On examination, he is irritable but consolable. His weight is below the 3rd percentile, having dropped from the 10th percentile at birth. Vital signs are: Temperature 36.8°C, Heart Rate 155 bpm, Respiratory Rate 40 bpm, Blood Pressure 85/50 mmHg, Oxygen Saturation 98% on room air. Capillary refill time is 3 seconds. Abdominal examination reveals a soft, non-distended abdomen with active bowel sounds; no palpable masses are appreciated. Initial blood gas shows pH 7.52, pCO2 40 mmHg, Bicarbonate 32 mmol/L, Na+ 132 mmol/L, K+ 3.0 mmol/L, Cl- 88 mmol/L. A point-of-care ultrasound was performed, and the image provided was obtained. Considering the clinical presentation, the laboratory findings, and the abnormality demonstrated in the provided image, which of the following best explains the mechanism leading to the observed electrolyte and acid-base derangements?

A. Loss of gastric acid (HCl) through vomiting, leading to compensatory renal hydrogen ion excretion and potassium wasting.
B. Increased aldosterone secretion due to dehydration, causing sodium retention and potassium excretion.
C. Excessive sodium and water loss in stool due to malabsorption.
D. Shift of potassium into intracellular space due to metabolic alkalosis.
E. Impaired renal bicarbonate excretion due to decreased glomerular filtration rate from dehydration.
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Pyloric stenosis as seen on ultrasound in a 6 week old
Image by Dr Laughlin Dawes CC BY-SA 4.0 · Source

A 6-week-old infant presents with a 1-week history of increasing frequency of non-bilious, projectile vomiting occurring shortly after feeds. He has lost some weight since his last check-up. Examination is otherwise unremarkable. An ultrasound is performed, shown in the image. Based on the clinical presentation and the provided image, which of the following electrolyte abnormalities is the most likely consequence if this condition remains untreated?

A. Hypernatremic metabolic acidosis
B. Hyponatremic respiratory alkalosis
C. Hypochloremic metabolic alkalosis
D. Hypokalemic respiratory acidosis
E. Hypercalcemic metabolic alkalosis
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A 45-year-old woman presents with a palpable lump in her left breast, noticed two weeks ago. She has no family history of breast cancer. On examination, the lump is firm, mobile, and approximately 2 cm. What is the most appropriate initial investigation?

A. Reassurance and review in 3 months
B. Mammogram and ultrasound of the breast
C. Core biopsy
D. MRI of the breast
E. Fine needle aspiration cytology
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An ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound, this ultrasound is for a 3 year old boy with intestinal intussusception.
Image by Frank Gaillard CC BY-SA 3.0 · Source

A 3-year-old boy presents with sudden onset intermittent severe abdominal pain, vomiting, and lethargy. On examination, he is pale but haemodynamically stable. Abdominal examination reveals a palpable mass in the right upper quadrant. An ultrasound is performed (image provided). What is the most appropriate next step in management?

A. Administration of broad-spectrum antibiotics
B. Admission for observation and IV fluids
C. Abdominal CT scan with contrast
D. Immediate surgical exploration
E. Air or hydrostatic enema reduction
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A 70-year-old man with a history of atrial fibrillation presents with sudden onset of severe pain, pallor, and coldness in his left leg, extending below the knee. On examination, the leg is cool to touch, pale, and distal pulses (popliteal, dorsalis pedis, posterior tibial) are absent. Sensation is diminished below the ankle, but he can still move his toes slightly. Capillary refill is delayed. Which of the following is the most appropriate initial diagnostic investigation?

A. Arterial duplex ultrasound of the affected limb
B. Venous duplex ultrasound of the affected limb
C. CT angiography of the affected limb
D. Plain film X-ray of the affected limb
E. ECG and cardiac enzymes
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A 35-year-old woman presents with a 2cm, firm, mobile lump in her left breast, noticed two weeks ago. She is otherwise well. What is the most appropriate initial investigation?

A. Core biopsy
B. Mammography
C. Fine needle aspiration cytology (FNAC)
D. Reassurance and review in 3 months
E. Ultrasound of the breast
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Ultrasonographic picture taken from a patient with left ureteral stone with hydronephrosis, created in Taiwan
Image by morning2k CC BY 2.5 · Source

A 40-year-old male presents with acute, severe left flank pain. An ultrasound is performed. What is the MOST likely underlying cause of the finding on the image?

A. Polycystic kidney disease
B. Renal cell carcinoma
C. Acute pyelonephritis
D. Ureteral obstruction
E. Renal vein thrombosis
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Pyloric stenosis as seen on ultrasound in a 6 week old
Image by Dr Laughlin Dawes CC BY-SA 4.0 · Source

A 6-week-old infant presents with a 1-week history of increasing non-bilious projectile vomiting after feeds. He is otherwise well, afebrile, and has wet nappies. Examination is unremarkable. An ultrasound is performed, shown in the image. Considering the clinical presentation and the findings in the provided image, what is the most appropriate definitive surgical intervention for this condition?

A. Antrectomy
B. Laparoscopic Nissen fundoplication
C. Ramstedt pyloromyotomy
D. Gastrostomy tube insertion
E. Pyloric dilatation
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Ultrasonographic picture taken from a patient with left ureteral stone with hydronephrosis, created in Taiwan
Image by morning2k CC BY 2.5 · Source

A 55-year-old man presents to the emergency department with sudden onset, severe left flank pain radiating to his groin, associated with nausea. He is afebrile, blood pressure 130/80 mmHg, heart rate 85 bpm. Urinalysis shows 20-30 red blood cells per high-power field. Serum creatinine is within normal limits. An ultrasound is performed. Considering the clinical context and the findings demonstrated in the provided image, which of the following is the most appropriate immediate management step?

A. Initiate empirical broad-spectrum intravenous antibiotics.
B. Prescribe oral tamsulosin and diclofenac and discharge home.
C. Urgent urology consultation for potential decompression.
D. Administer intravenous fluids and opioid analgesia and observe for spontaneous stone passage.
E. Arrange a non-contrast CT KUB as the definitive imaging modality.
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Contrast-enhanced ultrasound of encephaloid hepatocellular carcinoma
Image by R. Badea, Simona Ioanitescu CC BY 3.0 · Source

A 68-year-old male with known Hepatitis B related cirrhosis and a history of alcohol excess presents for routine surveillance. His alpha-fetoprotein (AFP) level, which has been stable at 15 ng/mL for the past two years, is now noted to be 185 ng/mL. A screening ultrasound performed three months prior was reported as showing diffuse parenchymal changes consistent with cirrhosis but no focal lesions. Due to the elevated AFP, a repeat ultrasound was performed, which identified a 2.5 cm nodule in segment VIII. To further characterise this lesion, a contrast-enhanced ultrasound (CEUS) was performed, and the images provided are representative findings from this study. The patient has well-compensated cirrhosis (Child-Pugh A) and no significant comorbidities. His liver function tests are within normal limits except for a slightly elevated GGT. Given the clinical context and the findings demonstrated in the provided images, what is the most appropriate next step in the management of this patient?

A. Referral for urgent liver transplant assessment
B. Repeat the contrast-enhanced ultrasound in 3 months to assess for interval change
C. Perform a percutaneous biopsy of the lesion for histological confirmation
D. Referral for discussion regarding locoregional therapy (e.g., ablation) or surgical resection
E. Initiate systemic therapy with sorafenib
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Ultrasonographic picture taken from a patient with left ureteral stone with hydronephrosis, created in Taiwan
Image by morning2k CC BY 2.5 · Source

A 45-year-old male presents to the ED with left flank pain radiating to his groin. He reports nausea but no vomiting. Vitals are stable. A focused assessment with sonography for trauma (FAST) exam is performed, with a view obtained as shown. What is the MOST appropriate next step in management?

A. Perform a cystoscopy
B. Discharge with analgesics and follow-up with urology
C. Non-contrast CT of the abdomen and pelvis
D. Order serum lipase and amylase
E. Administer intravenous antibiotics
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A 50-year-old woman presents with a newly discovered, firm, mobile lump in her left breast, approximately 2 cm in size. She has no family history of breast cancer. She is post-menopausal. On examination, the lump is palpable in the upper outer quadrant, appears well-defined, and is non-tender. There are no skin changes or nipple discharge. Axillary nodes are not palpable. Considering the Australian guidelines for breast lump assessment, which of the following is the most appropriate initial investigation?

A. Mammography and ultrasound
B. Clinical breast examination and review in 3 months
C. Ultrasound and core biopsy
D. Fine needle aspiration cytology
E. Mammography alone
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Ultrasonographic picture taken from a patient with left ureteral stone with hydronephrosis, created in Taiwan
Image by morning2k CC BY 2.5 · Source

A 45-year-old male presents to the emergency department with sudden onset severe left flank pain radiating to the groin. He reports some nausea but no vomiting. His temperature is 37.5°C, pulse 88 bpm, BP 130/80 mmHg, respiratory rate 16/min, oxygen saturation 98% on room air. On examination, he has significant left costovertebral angle tenderness. Urinalysis shows microscopic haematuria and trace leukocytes. His creatinine is 90 µmol/L (baseline unknown). An ultrasound of the kidneys is performed, shown in the image. Considering the patient's presentation and the findings demonstrated in the provided image, the most likely primary mechanism responsible for the severe pain experienced by this patient is:

A. Ischaemic injury to the renal tubules resulting from compromised blood flow.
B. Increased hydrostatic pressure leading to distension of the renal pelvis and collecting system.
C. Reflex spasm of the psoas muscle due to ureteral irritation.
D. Direct irritation of sensory nerve endings in the ureteral wall by the obstructing object.
E. Inflammatory response within the renal parenchyma secondary to bacterial invasion.
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An ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound, this ultrasound is for a 3 year old boy with intestinal intussusception.
Image by Frank Gaillard CC BY-SA 3.0 · Source

A 3-year-old boy presents with intermittent severe abdominal pain, vomiting, and lethargy. On examination, he is afebrile with a soft but slightly distended abdomen. An ultrasound is performed (image provided). Based on the clinical presentation and the image findings, what is the most appropriate next step in the management of this patient?

A. Pneumatic reduction under fluoroscopy
B. Admission for observation and IV fluids
C. Discharge home with pain relief
D. CT abdomen and pelvis
E. Urgent surgical exploration
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An ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound, this ultrasound is for a 3 year old boy with intestinal intussusception.
Image by Frank Gaillard CC BY-SA 3.0 · Source

A 3-year-old boy presents with sudden onset intermittent severe abdominal pain, vomiting, and lethargy. On examination, he is pale but haemodynamically stable. Abdominal examination reveals a palpable mass in the right upper quadrant. An ultrasound is performed (image provided). What is the most appropriate next step in management?

A. Admission for observation and IV fluids
B. Air or hydrostatic enema reduction
C. Urgent surgical exploration
D. Abdominal CT scan with contrast
E. Intravenous antibiotics
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Contrast-enhanced ultrasound of encephaloid hepatocellular carcinoma
Image by R. Badea, Simona Ioanitescu CC BY 3.0 · Source

A 70-year-old male with known cirrhosis secondary to NAFLD is undergoing routine surveillance. A new 3 cm lesion was identified in segment VIII on ultrasound, with AFP 45. Contrast-enhanced ultrasound was performed, with representative images shown. Based on the clinical context and the findings demonstrated, what is the most appropriate immediate next step in this patient's management?

A. Schedule repeat contrast-enhanced ultrasound in 3 months
B. Schedule for surgical resection
C. Referral to a multidisciplinary liver tumour board
D. Perform a percutaneous liver biopsy of the lesion
E. Initiate systemic therapy with sorafenib
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