Metastatic synovial sarcoma masquerading as primary neuroendocrine tumor of pancreas: a diagnostic conundrum.

Abstract

Metastatic sarcomas to the pancreas are extremely rare, with poor survival rates. Therefore, rapid diagnosis and differentiation from primary malignant tumors of pancreas thereby guiding the treatment is indispensable. Endoscopic ultrasound-guided fine needle biopsy (EUS-FNB) is the current diagnostic modality of choice for pancreatic tumor sampling with promising results. Definitive pathologic diagnosis requires adequate tissue for performing ancillary studies. We present a rare case of metastatic synovial sarcoma in the pancreas in an elderly male to endorse the utility of EUS-FNB with imprint cytology as a rapid and effective diagnostic tool.