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Hair follicle tumor, Norwegian Elkhound
hair-follicle-tumor-dog-villalobos-sized
Hair follicle tumor, Norwegian Elkhound

    Clinical photograph displaying caliper measurement of a keratoacanthoma in a dog. This tumor protruded above the epidermal surface with tumor wall rupture that caused a pyogranulomatous inflammatory response, ulceration, and self-trauma.

Courtesy of Dr. Alice Villalobos.