Desmoplastic Tricholemmoma in a Dog

January 2017 in “ Journal of veterinary medical science ”

Mun Keong Kok, James Chambers, Atsushi Dohata, Kazuyuki Uchida, Ryohei Nishimura, Hiroyuki Nakayama

desmoplastic tricholemmoma outer root sheath hair follicles histopathological analysis immunohistochemical analysis cytokeratin 15 cytokeratin 19 CD34 canine skin tumors

Studysummary This report diagnosed a mass below a dog's eye as desmoplastic tricholemmoma based on histopathological and immunohistochemical findings.

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The document described a rare case of desmoplastic tricholemmoma in a 10-year-old mixed breed dog, characterized by a 0.8 cm facial mass. The tumor, originating from the outer root sheath of hair follicles, was diagnosed through histopathological and immunohistochemical analysis, showing cells arranged in lobules, nests, and cords within a desmoplastic stroma, and positive for cytokeratin 15, cytokeratin 19, and CD34. This case underscored the importance of considering desmoplastic tricholemmoma in the differential diagnosis of canine skin tumors and contributed valuable insights to the limited veterinary literature on this condition.

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