title: Multiple hereditary exostoses: A pseudoaneurysm masquerading as tumor.
abstract: Multiple hereditary exostoses is an autosomal dominant condition characterized by numerous benign osteochondromas. Complications are rare and can include deformity, growth abnormality, fracture, adventitial bursa formation, local mass effect on a nerve, malignant degeneration, and vascular complications including stenosis, occlusion, arteriovenous fistula, and pseudoaneurysm. We present a case of multiple hereditary exostoses leading to a deep femoral artery pseudoaneurysm in the proximal medial thigh with subsequent rupture and hematoma, masquerading as tumor.
authors.affiliation: Department of Radiology and Biomedical Imaging, University of California, San Francisco, USA.
authors.forename: Hari
authors.initials: H
authors.lastname: Trivedi
authors.affiliation: Department of Radiology and Biomedical Imaging, University of California, San Francisco, USA.
authors.forename: Thomas M
authors.initials: TM
authors.lastname: Link
authors.affiliation: Department of Orthopaedic Surgery, University of California, San Francisco, USA.
authors.forename: Richard J
authors.initials: RJ
authors.lastname: O'Donnell
authors.affiliation: Department of Pathology, University of California, San Francisco, USA.
authors.forename: Andrew E
authors.initials: AE
authors.lastname: Horvai
authors.affiliation: Department of Radiology and Biomedical Imaging, University of California, San Francisco, USA.
authors.forename: Daria
authors.initials: D
authors.lastname: Motamedi
mesh_terms: D000328:Adult; D017541:Aneurysm, False / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000628:therapy; D017542:Aneurysm, Ruptured / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000628:therapy; D001706:Biopsy; D003287:Contrast Media; D003937:Diagnosis, Differential; D004621:Embolization, Therapeutic; D005097:Exostoses, Multiple Hereditary / Q000150:complications* / Q000000981:diagnostic imaging*; D005263:Femoral Artery; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media
keywords: CT; MRI; Ultrasound; complications; hematoma; metaphyseal tumor; multiple hereditary exostoses; multiple hereditary osteochondromas; pseudoaneurysm