title: Pathologic quiz case: a paratesticular mass in a 55-year-old man.
authors.affiliation: Department of Pathology, Northwestern University Medical School, Chicago, Ill., USA.
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Sun
authors.forename: Yun
authors.initials: Y
authors.lastname: Gong
authors.forename: Michael R
authors.initials: MR
authors.lastname: Pins
mesh_terms: D006801:Humans; D006965:Hyperplasia; D008297:Male; D008875:Middle Aged; D009130:Muscle, Smooth / Q000473:pathology* / Q000601:surgery; D013737:Testis / Q000473:pathology* / Q000601:surgery