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Case Rep Dermatol. 2012 Sep;4(3):215-21. doi: 10.1159/000343881. Epub 2012 Oct 16.

Profiles of tumor-infiltrating lymphocytes in a case of trichilemmal carcinoma with spontaneous regression.

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Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan.


We describe the case of a 69-year-old Japanese patient with spontaneous regression of trichilemmal carcinoma. We investigated the immunohistochemical profiles of tumor-infiltrating lymphocytes, focusing on cytotoxic granules, granulysin-bearing cells and immunosuppressive cells, such as regulatory T cells and tumor-associated macrophages. Our present study describes some of the possible mechanisms of the self-regression of cutaneous malignant tumors and potential therapies for trichilemmal carcinoma by modifying the tumor microenvironment.


Granulysin; Spontaneous regression; Trichilemmal carcinoma

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