title: Unusual sonographic appearance of an epidermoid cyst of the testis.
abstract: Epidermoid cyst of the testis is a rare benign testicular tumor with varied sonographic appearances. We present a case in which two specific ultrasonographic patterns were seen: (1) an "onion ring" configuration of alternating hyperechoic and hypoechoic regions, described previously as being characteristic of this lesion, and (2) a heterogeneous region with multiple punctate hyperechoic foci.
authors.affiliation: Department of Radiology, Montefiore Medical Center, Bronx, New York 10467, USA.
authors.forename: M M
authors.initials: MM
authors.lastname: Stein
authors.forename: M W
authors.initials: MW
authors.lastname: Stein
authors.forename: B C
authors.initials: BC
authors.lastname: Cohen
authors.forename: M
authors.initials: M
authors.lastname: Li
authors.forename: M
authors.initials: M
authors.lastname: Koenigsberg
mesh_terms: D000328:Adult; D004814:Epidermal Cyst / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D008297:Male; D013733:Testicular Diseases / Q000000981:diagnostic imaging* / Q000473:pathology; D014463:Ultrasonography