title: Rectal hidrocystoma.
abstract: We describe the endorectal sonographic and magnetic resonance (MR) imaging findings of a hidrocystoma of the rectal wall, a tumor that arises in sweat glands and may occur in a perianal location. To our knowledge, occurrence in the rectum has not been reported previously. The unusual appearance of a solid lesion with a central fluid-filled cavity may suggest the diagnosis of a hidrocystoma.
authors.affiliation: Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, USA.
authors.forename: Nazli
authors.initials: N
authors.lastname: Erbay
authors.forename: Jonathan B
authors.initials: JB
authors.lastname: Kruskal
authors.forename: Robert A
authors.initials: RA
authors.lastname: Kane
mesh_terms: D018251:Hidrocystoma / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D012007:Rectum / Q000000981:diagnostic imaging / Q000473:pathology; D013544:Sweat Gland Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D014463:Ultrasonography