Testosterone therapy and cancer risk.

Objective: To determine if testosterone therapy (TT) status modifies a man's risk of cancer.

Patients And Methods: The Urology clinic hormone database was queried for all men with a serum testosterone level and charts examined to determine TT status. Patient records were linked to the Texas Cancer Registry to determine the incidence of cancer.

Increased risk of cancer among azoospermic men.

Objective: To determine whether men with azoospermia are at an elevated risk of developing cancer in the years following an infertility evaluation.

Design: Cohort study.

Setting: United States andrology clinic.