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Endocrine Mucin-Producing Sweat Gland Carcinoma

Report of Two Cases of an Under-Recognized Malignant Neoplasm and Review of the Literature

Dhaliwal, Catharine A., BSc (Hons), MB ChB (Hons), PhD*; Torgersen, Antonia, MB ChB, FRCPath*; Ross, Jonathan J., FRCOphthal; Ironside, James W., FRCPath, FRSE*; Biswas, Asok, MD, FRCPath, DipRCPath*

The American Journal of Dermatopathology: February 2013 - Volume 35 - Issue 1 - p 117–124
doi: 10.1097/DAD.0b013e31826367be
Extraordinary Case Report
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Abstract: Endocrine mucin-producing sweat gland carcinoma (EMPSGC) is a rare low-grade sweat gland carcinoma with a strong predilection to the eyelid region. It is histologically analogous to endocrine ductal carcinoma/solid papillary carcinoma of the breast and is characterized by a multinodular solid cystic mucinous tumor with immunoreactivity to neuroendocrine markers. Only 20 cases of this unusual tumor have been reported. We present the clinical and histopathologic findings of 2 new cases of EMPSGC and review the relevant literature. The histological differential diagnosis is discussed and attention drawn to the role of immunohistochemistry in clarifying the nosological position of EMPSGC within the spectrum of cutaneous mucinous neoplasms.

*Department of Pathology, Western General Hospital, Edinburgh, United Kingdom

Borders Eye Centre, Borders General Hospital, Melrose, United Kingdom.

Reprints: Asok Biswas, MD, FRCPath, DipRCPath, Department of Pathology, Alexander Donald Building, Western General Hospital, Crewe Road, Edinburgh, EH4 2XU, United Kingdom (e-mail: asok.biswas@luht.scot.nhs.uk).

The authors declare no conflicts of interest.

© 2013 by Lippincott Williams & Wilkins.