Preputial calculi: a case report.

The patient was a 92-year-old male whose chief complaint was urinary retention. The X-ray film showed multiple overlapping calcification shadows in the penile region. Renal insufficiency was speculated to be due to post-renal obstruction. Under the diagnoses of closure of the preputial orifice by balanoposthitis followed by urinary retention and preputial calculi, an urgent dorsal incision of the prepuce was made. Then, stone removal and indwelling catheter placement were performed. Renal function recovered soon after the operation, and the patient could urinate freely without catheterization. This case reminds us of the significance of surgical treatment for phimosis in elderly patients.