Sclerosing hemangioma of the lung in a young woman with cutaneous melanoma: The role of electron microscopy in preventing an erroneous diagnosis of metastasis

Douglas A. Weeks, Samuel P. Hammar, Anne E. Rader, Richelle L. Malott, Gary W. Mierau

Research output: Contribution to journalArticle

Abstract

A young woman with a melanoma of the left forearm was found to have a right lung mass. This was initially interpreted as metastatic melanoma on the basis of clinical, radiographic, and light microscopic features, together with positive staining of tumor cells with antibody HMB-45. Electron microscopic examination performed for confirmation of the diagnosis revealed no evidence of melanocytic differentiation. Instead, there were features suggestive of the alternative diagnosis of sclerosing hemangioma (SH). This diagnosis was confirmed with additional immunocytochemical stains. To the authors' knowledge this is the first report of HMB-45 positivity in SH. This case illustrates a potentially disastrous diagnostic pitfall in interpreting lung tumors in patients with melanoma, and the vital role of electron microscopy in resolving conflicting and/or misleading immunocytochemical results.

Original languageEnglish (US)
Pages (from-to)261-265
Number of pages5
JournalUltrastructural Pathology
Volume26
Issue number4
DOIs
StatePublished - Jul 1 2002

Keywords

  • Electron microscopy
  • HMB-45
  • Melanoma
  • Sclerosing hemangioma

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Structural Biology

Fingerprint Dive into the research topics of 'Sclerosing hemangioma of the lung in a young woman with cutaneous melanoma: The role of electron microscopy in preventing an erroneous diagnosis of metastasis'. Together they form a unique fingerprint.

  • Cite this