Enlarging pancreatic schwannoma: a case report and review of the literature

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Narjust Duma *
Daniel C. Ramirez
Gloria Young
George Nikias
Martin Karpeh
Zubin M. Bamboat
(*) Corresponding Author:
Narjust Duma | narjustperezmd@gmail.com

Abstract

A 72-year-old female presented with dyspepsia for 2 years and an incidental mass in the head of the pancreas on abdominal computed tomography (CT) scan. Patient had multiple negative endoscopic ultrasound guided biopsies. She was followed up for 3 years with serial imaging until an abdominal CT scan showed an increase in size of the pancreatic mass. Physical examination was unremarkable. Laboratory tests including tumor markers were normal. Given the enlarging size of the mass and its impingement on the portal vein, the consensus was to proceed with surgery. Histology revealed a 3.5 cm mass showing a spindle cell neoplasm with mild atypia. The lesion was well defined and nerve tissue was noted at the periphery. On immuno-stains, the spindle cells were positive for S-100 protein and negative for pan-cytokeratin, CD-34, CD- 117, smooth muscle actin and Melan A, consistent with the diagnosis of a pancreatic schwannoma.

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