An Unusual Presentation of Massive Asymptomatic Urinary Retention in a 63-Year-Old Male With Iron Deficiency Anaemia.

Chronic urinary retention (CUR) is typically symptomatic, but rare cases exist where patients present without symptoms. We report on a 63-year-old man with a huge, distended bladder, holding approximately 15 litres of urine at the time of examination. Despite the bladder's size, the patient was completely asymptomatic, with preserved renal function. Management included catheterization with intermittent clamping to prevent rapid decompression, and initiation of tamsulosin and finasteride for suspected benign prostatic enlargement (BPE), with plans for transurethral resection of the prostate (TURP) as definitive management. Even without symptoms, CUR can exist and risks serious complications if not identified and managed early.