Testicular cytology in azoospermia

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Abstract
Two hundred‐seventy‐five azoospermic mates were subjected to fine‐needle aspiration (FNA) cytologic study of testis with the aim of determining the cause of azoospermia; 534 aspirates from these patients were classified as follows: normal spermatogenesis (162), hypospermatogenesis (mild, moderate, or severe, 226), absence of spermatogenesis (130), maturation arrest (36), Sertoli‐cell‐only syndrome (14), and Leydig‐cell hyperplasia (3). The morphology of cells was excellent in the cytologic preparations and various spermatogenic cells and Sertoli cells were easily recognized. Leydig cells were uncommonly seen, except in cases of Leydig‐cell hyperplasia. Degenerative changes, possibly due to obstruction, were seen in 104 cases. The procedure was well tolerated by the patients. We conclude that FNA cytology is a useful investigative modality in the evaluation of azoospermic males.