Malignant fibrous histiocytoma (giant cell type) of the pancreas. A distinctive variant of osteoclast-type giant cell tumor of the pancreas

S. Suster, M. Phillips, M. J. Robinson

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Abstract

Malignant giant cell tumors of the pancreas are rare neoplasms which have been generally thought to represent epithelial malignancies of either acinar or ductal epithelium. The authors have studied a tumor of the pancreas that was characterized histologically by a proliferation of benign-appearing osteoclasttype giant cells in association with atypical, often bizarre mononuclear cells. Immunohistochemical studies demonstrated negative staining of the tumor cells with epithelial markers, including low-molecular weight keratins, carcinoembryonic antigen and epithelial membrane antigen, and positive staining with vimentin antibodies, supporting a fibroblastic line of differentiation. Electron microscopic examination also showed absence of ultrastructural features of epithelial differentiation such as microvilli, intercellular junctions, or desmosomes. The authors believe the current case represents a true sarcoma of the pancreas, currently from the epithelial type of osteoclastic giant cell tumor of the pancreas

Original languageEnglish
Pages (from-to)2303-2308
Number of pages6
JournalCancer
Volume64
Issue number11
StatePublished - Jan 1 1989
Externally publishedYes

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ASJC Scopus subject areas

  • Cancer Research
  • Oncology

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