Primitive neuroectodermal tumor arising in the pancreas.

D. B. Danner, R. H. Hruban, H. A. Pitt, R. Hayashi, C. A. Griffin, E. J. Perlman

Research output: Contribution to journalArticlepeer-review


Peripheral primitive neuroectodermal tumors (PNETs) are extra cranial primitive small round blue cell tumors showing histologic, immunohistochemical or electron microscopic evidence of neuroectodermal differentiation. They are most commonly encountered in the soft tissue or bone in children and young adults. We report an unusual case of a PNET arising in the pancreas. A 17-yr-old male presented with a pancreatic mass and underwent a pancreatoduodenectomy. Histologically, the neoplasm was composed of sheets of small round cells that stained for cytokeratin, neuron specific enolase, and 12E7 but not muscle specific action, desmin, common leukocyte antigen, chromogranin, synaptophysin, or other islet cell markers. The diagnosis of PNET in this unusual location was confirmed by cytogenetic analysis which showed the chromosomal translocation characteristics of PNETs, t(11;12)(q24;q12). This case highlights the difficulty in the diagnosis of PNET when it is present in visceral organs where other neuroendocrine neoplasms and adenocarcinomas are more common.

Original languageEnglish (US)
Pages (from-to)200-204
Number of pages5
JournalModern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc
Issue number2
StatePublished - Feb 1994

ASJC Scopus subject areas

  • Pathology and Forensic Medicine


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