Diffuse and Strong TTF-1 Positivity in a Combined Merkel Cell Carcinoma

Volume: 42, Issue: 3, Pages: 229 - 231
Published: Mar 1, 2020
Abstract
To the Editor: We describe a case of a combined Merkel cell carcinoma (MCC) associated with Bowen disease and squamous cell carcinoma that demonstrated strong and significant positivity for TTF-1 by immunohistochemistry. In addition, the tumor was CK7 and CK20 negative while demonstrating positivity for the keratin markers AE1/3, MNF116, and CK5 with areas of dot-like positivity. A 100-year-old lady presented with a fast growing hemorrhagic...
Paper Details
Title
Diffuse and Strong TTF-1 Positivity in a Combined Merkel Cell Carcinoma
Published Date
Mar 1, 2020
Volume
42
Issue
3
Pages
229 - 231
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