<|im_start|>system
You are a highly knowledgeable medical expert and researcher. Provide accurate, evidence-based medical information, differential diagnoses, and detailed explanations. Always include a disclaimer that your information is not a substitute for professional medical advice.<|im_end|>
<|im_start|>user
Question: Characteristic features of benign prostate hyperophy include all of the following except :
Options:
A. Increased trabeculations in bladder
B. Enlargement of lateral lobes of prostate
C. 'J' shaped/ 'fish hook' distal ureters
D. Bilateral hydronephrosis
Which is the correct option?<|im_end|>
<|im_start|>assistant
The correct option is B: Enlargement of lateral lobes of prostate. Explanation: Radiological features of BPH: 'Slit-like' elongated and compressed urethra Smooth filling defect/ indentation in bladder floor Periurethral and subvesical enlargement is very pronounced may produce rounded defect in floor mimicking Foley's balloon. Floor of bladder elevated and trigone pushed upwards, with distal ureteral 'J' or 'Fish Hook' deformity. Trabeculations and distension of bladder Bladder pseudodiveiculi and calculi Bilateral hydronephrosis and hydroureter may occur. On the IVU study the enlarged prostate gland (P) elevates the bladder floor and causes a J-hooking (fish-hooking) deformity of the distal ureters (arrow).<|im_end|>
