This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastrointestinal Radiology, Subject name: Radiology
[{'content': 'A 25 years old female presented with a complaint of acute pain in the abdomen for the past 12 hours. On examination, there is severe tenderness in the right iliac fossa. The patient denied any history of tuberculosis. On CBC, neutrophil count appears to be raised. The X-ray of the abdomen did not show any evidence of bowel obstruction. An ultrasound abdomen was performed and given below. What is the probable diagnosis? \nSelect and explain. \nA. Acute appendicitis with fecolith, B. Acute appendicitis with lipoma, C. Acute appendicitis with polyp, D. Ascariasis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ultrasound shows a non-communicating dilated tubular structure with a hyperechoic foci within it . Given the clinical scenario, the most probable diagnosis is acute appendicitis with fecolith.', 'role': 'assistant'}]