A 24-year-old man was presented with sudden onset of left upper quadrant pain radiating to the groin with mild haematuria. He is otherwise fit and well, with no history of renal problems or lower urinary tract syndromes. He smokes 10 cigarettes per day and drinks around 10 units of alcohol per week. Examination Pulse: 94 /min. with otherwise normal observations Chest examination is normal with normal heart sounds Abdomen appears soft but tender on the left side (most probably over the left renal angle and left inguinal fossa) Urinalysis shows blood 4+ but no proteins or nitrites Intravenous urogram was performed at control and at 20 minutes, where pelvic views looked normal.
Contrast-enhanced CT was performed. Attached images indicate control and corresponding coronal CT slice demonstrating the renal outline and appearance. What is the differential diagnosis in this case? *This case is…
