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Updated: Oct 29, 2025

Surgical Treatment of an Endolymphatic Sac Tumor
Published on: May 26, 2023
Mediastinal Mass: An Unusual Location for a Paraganglioma
Scott Landreth1, Castigliano Bhamidipati1, Ashok Muralidaran1
1Department of Diagnostic Radiology (S.L., C.F.), Department of Surgery, Division of Cardiothoracic Surgery (C.B., A.M.), and Department of Pathology (D.S.), Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239-3098; and Department of Radiology, University of California, Davis, Sacramento, Calif (B.G.).
Abstract:
A 50-year-old man presented to the hospital for workup of a symptomatic inguinal hernia. At presurgical workup, findings from a contrast material-enhanced CT of the chest, abdomen, and pelvis revealed a large, well-defined and enhancing middle mediastinal mass arising from the right ventricular outflow tract. The mass was ultimately deemed resectable due to preserved fat planes between the mass and other mediastinal structures and the preservation of the right and left coronary arteries. The tumor was diagnosed as a mediastinal paraganglioma at histologic assessment. Keywords: Adults, Angiography, CT-Angiography, MR-Angiography, Cardiac, Neoplasms-Primary ©RSNA, 2021.

