title: A high proportion of double-headed and double-tailed sperm in semen of a human male. A case report.
abstract: We present the case of a patient whose semen contained 30% of sperm with double heads and double tails at various stages of attachment due to abnormal meiosis. The genital system, sperm density, endocrinological profile and karyotype were normal. It is postulated that abundance of the above-noted type of sperm pathology in the human semen might not necessarily be associated with oligozoospermia or fertility impairment.
mesh_terms: D000328:Adult; D006801:Humans; D007248:Infertility, Male / Q000209:etiology; D008297:Male; D008540:Meiosis; D012661:Semen / Q000166:cytology*; D013077:Sperm Head / Q000002:abnormalities; D013082:Sperm Tail / Q000002:abnormalities; D013094:Spermatozoa / Q000002:abnormalities* / Q000166:cytology