title: Cystic pilomatrixoma of the wrist mimicking a ganglion cyst in a child.
abstract: We describe a patient with a cystic pilomatrixoma mimicking a ganglion cyst on ultrasound. A 9-year-old boy had a subcutaneous mass on his left wrist. Ultrasound displayed a well-defined, multilobulated anechoic mass containing a few internal septa between the extensor pollicis longus and the extensor carpi radialis longus tendons. Sonographic findings suggested that the mass was a ganglion cyst. After excisional biopsy, histopathologic examination confirmed the diagnosis of pilomatrixoma.
authors.affiliation: Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea.
authors.forename: Eun-Hee
authors.initials: EH
authors.lastname: Song
authors.forename: So-Yeon
authors.initials: SY
authors.lastname: Lee
authors.forename: Hee-Jin
authors.initials: HJ
authors.lastname: Park
authors.forename: Yoo
authors.initials: Y
authors.lastname: Jin Lee
authors.forename: Seoung
authors.initials: S
authors.lastname: Wan Chae
authors.forename: Jung-Soo
authors.initials: JS
authors.lastname: Pyo
authors.forename: Min-Hee
authors.initials: MH
authors.lastname: Lee
mesh_terms: D001706:Biopsy; D002648:Child; D003937:Diagnosis, Differential; D045888:Ganglion Cysts / Q000000981:diagnostic imaging; D006201:Hair Diseases / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D018296:Pilomatrixoma / Q000000981:diagnostic imaging*; D012878:Skin Neoplasms / Q000000981:diagnostic imaging*; D018615:Ultrasonography, Doppler, Color; D014953:Wrist