Perivascular epithelioid clear cell tumor of the common bile duct

Saha Sadeghi, Hannah Krigman, Horacio Maluf

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

The perivascular epithelioid clear cell tumor (PEComa) has been described in a number of locations, including the pancreas, uterus, bladder, prostate, and gastrointestinal tract. We report the existence of a similar tumor occurring in the distal common bile duct of a 51-year-old man admitted for obstructive jaundice. The tumor had characteristic histologic features of a PEComa, including a richly vascular organoid architecture, tumor cells with clear to lightly eosinophilic cytoplasm, and variably prominent nucleoli. Immunohistochemically, the tumor cells were positive for HMB-45 and neuron specific enolase but negative the epithelial markers, smooth muscle markers, other neuroendocrine markers, vimentin, melan-A, and S-100 protein. PEComas appear to be ubiquitous tumors with characteristic histology and immunophenotype. Although most of these tumors have behaved in a benign fashion. they should be considered tumors of uncertain malignant potential given previous reports of recurrence and metastases. During a short follow-up period following a conservative local excision, our patient remains free of disease.

Original languageEnglish (US)
Pages (from-to)1107-1110
Number of pages4
JournalAmerican Journal of Surgical Pathology
Volume28
Issue number8
DOIs
StatePublished - Aug 1 2004

Keywords

  • HMB-45
  • PEComa
  • Perivascular epitheloid clear cell tumor

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