Round-headed spermatozoa: a case report.
A case is presented of a patient in whom over 90% of spermatozoa had distinctive round heads as seen by light microscopy. Other features of his semen were only slightly abnormal. Electron microscopy revealed spermatozoa with no acrosome confirming the sterility of the patient. With such men other means of achieving a family must be considered.
D000328:Adult; D006801:Humans; D007248:Infertility, Male / Q000473:pathology*; D008297:Male; D008854:Microscopy, Electron; D013077:Sperm Head / Q000648:ultrastructure*; D013094:Spermatozoa / Q000648:ultrastructure*