Alveolar soft part sarcoma: unusual etiology of mediastinal mass in an adolescent

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Ryan Schenning
Petra Vajtai
Megan Troxell
Jeffrey Pollock
Katharine Hopkins *
(*) Corresponding Author:
Katharine Hopkins | hopkinsk@ohsu.edu

Abstract

Alveolar soft part sarcoma (ASPS) is a rare malignancy that usually arises in an extremity. Mediastinal involvement is uncommon, with only two reports of primary mediastinal disease and two reports of metastatic mediastinal disease in the literature, all referencing adult patients. To our knowledge, ours is the first report of ASPS presenting with a mediastinal mass in adolescence. Although ASPS is not generally included in the differential for adolescent mediastinal masses, it should be considered when clinical presentation and imaging appearance are characteristic.

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Author Biographies

Ryan Schenning, Department of Diagnostic Radiology, Oregon Health & Science University, Portland, Oregon

Resident

Petra Vajtai, Departments of Diagnostic Radiology and Pediatrics, Oregon Health & Science University, Portland, Oregon

Assistant Professor

Megan Troxell, Department of Pathology, Oregon Health & Science University, Portland, Oregon

Associate Professor

Jeffrey Pollock, Department of Diagnostic Radiology, Oregon Health & Science University, Portland, Oregon

Assistant Professor

Katharine Hopkins, Departments of Diagnostic Radiology and Pediatrics, Oregon Health & Science University, Portland, Oregon

Associate Professor