Ethnic differences in serum testosterone concentration among Malay, Chinese and Indian men: A cross-sectional study.

Objective: To investigate non-urological patients with multiple comorbidities for factors contributing towards differences in testosterone concentration in multiethnic Malaysian men.

Design: An observational study.

Patients: Sexually active men, ≥40 years, with no known urological problems, were recruited at the phlebotomy clinic at our centre.

Resonance metallic ureteric stent in a case of ketamine bladder induced bilateral ureteric obstruction with one year follow up.

Introduction: Upper urinary tract occlusion is well recognized in patients with chronic ketamine abuse. The mechanism is generally unknown, but the ulcerative cystitis contracture may be responsible for obstruction. We present the first reported use of the Resonance metallic ureteric stent in the management ureteric obstruction caused by ketamine-induced uropathy.