History An 81-year-old man presents to the emergency department complaining of difficulty in passing urine. On questioning, he reports a worsening urinary stream over the past 6 months, together with increased nocturia. There is a recent history of bedwetting. He has no pain. He opens his bowels 3–4 times a week and his last bowel motion were 2 days ago. He is on insulin for type 1 diabetes. He also takes aspirin 75 mg od and simvastatin 20 mg od.

He lives alone and mobilizes well with a walking stick. He is a non-smoker and has the occasional whiskey at night to help him sleep. Examination On examination of the abdomen, there is a palpable suprapubic mass, which is non-tender and dull to percussion. The rest of the abdomen and genitalia are unremarkable. Digital rectal examination reveals an enlarged smooth-feeling prostate gland. What is the likely diagnosis? *This case is from…