Percutaneous epididymal sperm aspiration versus microsurgical epididymal sperm aspiration for irreparable obstructive azoospermia--experience with 100 cases.

Abstract

Both PESA and MESA can be used successfully to obtain sufficient sperm for ICSI. PESA cannot replace MESA in some cases as some epididymal pathologies prevent its success. The results of this study indicate that PESA should be the treatment of choice for patients with ductal obstruction distal to the epididymis, owing to its higher initial success rate. In contrast, patients with irreparable epididymal obstruction might achieve better success rates with MESA.