title: Elastofibroma of the gluteal region with a concomitant contralateral lesion: case report and review of the literature.
abstract: A 51-year-old man presented with elastofibroma (EF) of the gluteal region with a concomitant contralateral lesion. The patient presented with a slow growing mass of the proximal third of the right buttock and had swelling, discomfort in sitting, and right-hip pain during walking for 2 months. On MRI, a soft-tissue mass was noted between the gluteus maximus and the gluteus medius muscle. The mass showed similar signal intensity to the surrounding tissue on T1- and T2-weighted images and with linear hyperintense areas in its internal structure. At surgery, a soft, non-encapsulated, irregular, and rubber-like mass was found attached to the gluteus medius muscles. It was pathologically confirmed to be an EF. This unusual manifestation of an EF is discussed.
authors.affiliation: III Orthopaedic and Traumatology Clinic, Rizzoli Orthopaedic Institute, Via Pupilli 1, 40136, Bologna, Italy. luca.cevolani@gmail.com.
authors.forename: Luca
authors.identifier: http://orcid.org/0000-0002-3190-1034
authors.initials: L
authors.lastname: Cevolani
authors.affiliation: III Orthopaedic and Traumatology Clinic, Rizzoli Orthopaedic Institute, Via Pupilli 1, 40136, Bologna, Italy.
authors.forename: R
authors.initials: R
authors.lastname: Casadei
authors.affiliation: Bone Tumor Center, Rizzoli Orthopaedic Institute, Bologna, Italy.
authors.forename: D
authors.initials: D
authors.lastname: Vanel
authors.affiliation: Bone Tumor Center, Rizzoli Orthopaedic Institute, Bologna, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Gambarotti
authors.affiliation: III Orthopaedic and Traumatology Clinic, Rizzoli Orthopaedic Institute, Via Pupilli 1, 40136, Bologna, Italy.
authors.forename: D
authors.initials: D
authors.lastname: Donati
mesh_terms: D002081:Buttocks; D003937:Diagnosis, Differential; D005350:Fibroma / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012983:Soft Tissue Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery
keywords: Elastofibroma; Magnetic resonance imaging; Ultrasound