Sonographic evidence of minimal and short-term testicular damage after testicular sperm aspiration procedures.

Objective: To evaluate ultrasonically the incidence and duration of tissue damage after testicular sperm aspiration (TESA) procedures.

Design: Prospective, nonrandomized study.

Setting: Assisted reproductive technology program.

Prognostic value of the clinical and laboratory evaluation in patients with nonmosaic Klinefelter syndrome who are receiving assisted reproductive therapy.

Objective: To characterize clinical and laboratory findings in nonmosaic 47,XXY patients that may help to predict spermatogenetic activity in their testicles.

Design: Prospective study.

Setting: Assisted reproductive technology program.