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J Cutan Pathol. 2017 Dec;44(12):1057-1063. doi: 10.1111/cup.13026. Epub 2017 Sep 11.

Epithelioid malignant mesothelioma metastatic to the skin: A case report and review of the literature.

Author information

1
Department of Dermatology, Wayne State University, Dearborn, Michigan.
2
Dermatology and Plastic Surgery Associates, Lombard, Illinois.
3
Department of Dermatology, Indiana University School of Medicine, Indianapolis, Indiana.
4
Department of Pathology, Indiana University School of Medicine, Indianapolis, Indiana.

Abstract

Malignant mesothelioma (MM) is an aggressive and invasive neoplasm primarily affecting the pleura, peritoneum and pericardium. While mesothelioma commonly metastasizes to visceral organs, it has rarely been documented to involve the skin and subcutaneous tissue. There is a paucity of reports of cutaneous metastatic mesothelioma, and histologic examination is often challenging because the tumor closely mimics other primary and metastatic neoplasms. We report a case of a 75-year-old man presenting with a firm, hard nodule on his upper back, which on initial histologic evaluation resembled metastatic adenocarcinoma. However, upon review of his medical history and immunohistochemical evaluation of the lesion, the diagnosis of epithelioid MM metastatic to the skin was rendered. The purpose of this case report and review of the literature is to summarize the most effective available immunostains to aid in the diagnosis of this challenging entity, highlight the histologic similarities between metastatic epithelioid MM and other primary and metastatic neoplasms of the skin, and provide prognostic information for these rare tumors.

KEYWORDS:

cutaneous; histopathology; immunohistochemistry; mesothelioma; metastasis

PMID:
28800180
DOI:
10.1111/cup.13026
[Indexed for MEDLINE]

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