title: Pseudoaneurysm of the posterior circumflex humeral artery diagnosed by sonography.
abstract: We report a rare case of a pseudoaneurysm of the posterior circumflex humeral artery, probably related to a steroid injection in the shoulder 3 months earlier. The clinical presentation was atypical and the location not previously described in the literature. The patient was referred with a painless, nonpulsatile mass in the posterior shoulder region and was suspected of a malignant soft-tissue tumor. Sonography, including power Doppler imaging, demonstrated a pseudoaneurysm, with the intralesional blood-filled cavity developed from the posterior circumflex humeral artery. The diagnosis was confirmed by pathologic examination of the surgical specimen.
authors.affiliation: Department of Radiology, Herlev University Hospital, Herlev, Denmark.
authors.forename: Bodil
authors.initials: B
authors.lastname: Damgaard
authors.forename: Michel
authors.initials: M
authors.lastname: Court-Payen
authors.forename: Lone
authors.initials: L
authors.lastname: Larsen
authors.forename: Gunnar
authors.initials: G
authors.lastname: Lausten
mesh_terms: D017541:Aneurysm, False / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D000792:Angiography / Q000379:methods; D001158:Arteries / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D006801:Humans; D006811:Humerus / Q000098:blood supply*; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D014057:Tomography, X-Ray Computed / Q000379:methods; D018608:Ultrasonography, Doppler