Brief ReportA Rare Perineurioma/Granular Cell Tumor Hybrid Peripheral Nerve Sheath TumorHaghayeghi, Koorosh MD, PharmD*; Telang, Gladys MD†; Chen, Sonja MBBS*; Bevivino, Jack MD‡; Mangray, Shamlal MBBS*; Hui, Yiang MD*; Robinson-Bostom, Leslie MD† Author Information *Department of Pathology and Laboratory Medicine, Warren Alpert Medical School of Brown/Rhode Island Hospital, Providence, RI. Dr. Mangray is now with the Nationwide Children's Hospital, Columbus, OH. Dr. Hui is now with the Memorial Sloan Kattering Institude; and Departments of †Dermatology, and ‡Surgery, Warren Alpert Medical School of Brown/Rhode Island Hospital, Providence, RI. Correspondence: Koorosh Haghayeghi, Department of Pathology and Laboratory Medicine, Warren Alpert Medical School of Brown/Rhode Island Hospital, Providence, RI 02903 (e-mail: [email protected]). The authors declare no conflicts of interest. The American Journal of Dermatopathology: October 2020 - Volume 42 - Issue 10 - p 762-765 doi: 10.1097/DAD.0000000000001606 Buy Metrics Abstract Hybrid peripheral nerve sheath tumors (PNSTs) are rare benign composite neoplasms demonstrating features of multiple endogenous nerve sheath cell types. Hybrid PNSTs with granular cell components are exceedingly rare. Only a handful number of hybrid PNSTs composed of granular cell tumor and perineurioma have been described to date. We present a rare hybrid of perineurioma and granular cell tumor and review the literature. Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.