title: [Four cases of sperm invasion].
abstract: Four cases of spermatic invasion of epididymis are presented. All four cases were fertile. The etiology, histological findings, and role of sperm invasion in male infertility are discussed.
authors.affiliation: Department of Urology, Minoo City Hospital.
authors.forename: S
authors.initials: S
authors.lastname: Yamaguchi
authors.forename: M
authors.initials: M
authors.lastname: Kyakuno
authors.forename: M
authors.initials: M
authors.lastname: Osafune
mesh_terms: D000328:Adult; D004822:Epididymis / Q000473:pathology*; D006099:Granuloma / Q000473:pathology*; D006801:Humans; D007248:Infertility, Male / Q000209:etiology; D008297:Male; D008875:Middle Aged; D013094:Spermatozoa / Q000473:pathology*; D013733:Testicular Diseases / Q000209:etiology / Q000473:pathology