title: Synovial Sarcoma-AV Malformation Collision in the Anterior Mediastinum.
abstract: Arteriovenous malformation (AVM) and synovial sarcomas are both rare lesions in the mediastinum. Rarer still is a collision tumor in that region. Herein we present a case of a collision tumor comprised of AVM and synovial sarcoma in a 76-year-old man, presenting with pneumonia. Imaging showed a vascular lesion that spontaneously ruptured, causing enlargement of the mass and hemothorax. The resected specimen revealed the malignant second component. This report is a discussion of the never-before reported lesion.
authors.forename: Aneta
authors.initials: A
authors.lastname: Bakula
authors.forename: Mary
authors.initials: M
authors.lastname: Fiel-Gan
authors.forename: Michael
authors.initials: M
authors.lastname: Levinson
authors.forename: Tinera
authors.initials: T
authors.lastname: Buckley
authors.forename: John
authors.initials: J
authors.lastname: Volpe
authors.forename: Robert
authors.initials: R
authors.lastname: Lowe
mesh_terms: D000368:Aged; D001165:Arteriovenous Malformations / Q000150:complications*; D001981:Bronchial Arteries / Q000002:abnormalities*; D006491:Hemothorax / Q000209:etiology; D006801:Humans; D008297:Male; D008323:Mammary Arteries / Q000002:abnormalities*; D008479:Mediastinal Neoplasms / Q000150:complications*; D012422:Rupture, Spontaneous; D013584:Sarcoma, Synovial / Q000150:complications*