title: MRI features of calcifying aponeurotic fibroma in the upper arm: a case report and review of the literature.
abstract: Calcifying aponeurotic fibroma is a rare soft tissue tumor that occurs in the distal extremities of children and adolescents. We report a case of pathologically proven calcifying aponeurotic fibroma in the left upper arm of a 23-year-old female. Radiographs revealed increased soft tissue density with multiple stippled calcifications in the mid-portion of the patient's left upper arm. Magnetic resonance imaging (MRI) showed a well-defined soft tissue mass with low to intermediate signal intensity on T1-weighted images, heterogeneously low signal intensity on T2-weighted images, and heterogeneous enhancement on fat-suppressed, contrast-enhanced T1-weighted images. Histologically, spindle cell proliferation with scattered calcifications and hyalinization was present. Seven years after surgery, there was no evidence of local recurrence. This is the first report of MRI findings of calcifying aponeurotic fibroma in the upper arm. We also summarize the MRI findings of 16 previously reported cases of calcifying aponeurotic fibroma originating in the upper or lower extremities.
authors.affiliation: Department of Radiology, University of Ulsan College of Medicine, Ulsan University Hospital, 877 Bangeojinsunhwan-doro, Dong-gu, Ulsan, 44033, Korea.
authors.forename: Sang Woo
authors.initials: SW
authors.lastname: Shim
authors.affiliation: Department of Radiology, University of Ulsan College of Medicine, Ulsan University Hospital, 877 Bangeojinsunhwan-doro, Dong-gu, Ulsan, 44033, Korea. kangbs0708@hanmail.net.
authors.forename: Byeong Seong
authors.initials: BS
authors.lastname: Kang
authors.affiliation: Department of Orthopaedic Surgery, University of Ulsan College of Medicine, Ulsan University Hospital, Ulsan, Korea.
authors.forename: Chae-Chil
authors.initials: CC
authors.lastname: Lee
authors.affiliation: Department of Pathology, University of Ulsan College of Medicine, Ulsan University Hospital, Ulsan, Korea.
authors.forename: Jae Hee
authors.initials: JH
authors.lastname: Suh
authors.affiliation: Department of Radiology, University of Ulsan College of Medicine, Ulsan University Hospital, 877 Bangeojinsunhwan-doro, Dong-gu, Ulsan, 44033, Korea.
authors.forename: Hyun Seok
authors.initials: HS
authors.lastname: Shim
mesh_terms: D002114:Calcinosis / Q000000981:diagnostic imaging*; D005260:Female; D005350:Fibroma / Q000000981:diagnostic imaging*; D006801:Humans; D008279:Magnetic Resonance Imaging; D012983:Soft Tissue Neoplasms / Q000000981:diagnostic imaging*; D034941:Upper Extremity / Q000000981:diagnostic imaging* / Q000473:pathology; D055815:Young Adult
keywords: Arm; Fibroma; Magnetic resonance imaging (MRI)