Cytomegalovirus detection in cryopreserved semen samples collected for therapeutic donor insemination.

The presence of cytomegalovirus (CMV) in semen was retrospectively evaluated in 178 cryopreserved semen samples obtained from 97 donors recruited by two sperm banks. Thirty-three (34.0%) donors were CMV-seronegative, 51 (52.

Inconstant ascending testis as a potential risk factor for spermatogenesis in infertile men with no history of cryptorchism.

The usual testicular location, either low or high in the scrotum, as well as testis ascent into suprascrotal position at least once a week from a usually scrotal position reported by the patient to occur spontaneously and regularly, were recorded in 85 fertile and 1014 infertile men, including 95 with a history of cryptorchism. The frequency of at least one testis being in a high scrotal location was similar in fertile (16.5%) and non-cryptorchid infertile (17%) men but higher in previously cryptorchid infertile men (27.

Ultrastructural identification of Sertoli cells in the semen of subfertile men. About four cases.

In this work Sertoli cells were identified in the semen of subfertile men using transmission electron microscopy. This observation is rare and has only been reported before once. These results would favour of seminiferous epithelium alterations and could be correlated with the presence of immature seminal line elements or non sperm cells in prospective studies.