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Case Reports in Pulmonology
Volume 2018 (2018), Article ID 1424275, 4 pages
https://doi.org/10.1155/2018/1424275
Case Report

Robot-Assisted Thoracoscopic Resection of a Posterior Mediastinal Mullerian Cyst

1Division of Thoracic Surgery, UMass Memorial Medical Center, University of Massachusetts Medical School, Worcester, MA, USA
2Department of Pathology, UMass Memorial Medical Center, University of Massachusetts Medical School, Worcester, MA, USA

Correspondence should be addressed to Karl Uy; gro.lairomemssamu@yu.lrak

Received 16 November 2017; Accepted 10 January 2018; Published 4 February 2018

Academic Editor: Daniel T. Merrick

Copyright © 2018 Calvin Chao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

First described in 2005, the Mullerian derived cyst in the mediastinum is a rare finding with few subsequent reports. We report a case of Mullerian cyst occurring in the mediastinum of a 49-year-old female that was resected by robot-assisted thoracoscopic surgery. To our knowledge, this is the first report of robot-assisted resection of Hattori’s cyst. Histopathologic analysis revealed ciliated Mullerian-type tubal epithelium positive for paired box gene 8 (PAX8), estrogen receptor (ER), and progesterone receptor (PR), confirming Mullerian differentiation. We also review the clinical presentation, pathology, and differential diagnosis of such cysts.