trichoepitheliomas - HEALTHY
Trichoepithelioma is a rare benign skin lesion that originates from hair follicles. Trichoepitheliomas are mostly seen in the scalp, nose, forehead, and upper lip. Trichoepitheliomas are usually skin-colored, translucent, and appear as smooth, round bumps or nodules measuring less than 1 cm in diameter.
Context Explanation
Trichoepitheliomas may also be blue, brown, flesh-colored, pink or yellow. Trichoepitheliomas develop when certain cells within these follicles begin to multiply abnormally, forming small, solid tumors. The exact reason why this happens isn't fully understood, but research suggests a combination of genetic and environmental factors. Trichoepitheliomas and trichoblastomas are benign adnexal tumors, which may show morphologic overlap and recapitulate features of germinative hair bulb epithelium and associated mesenchymal stroma