Etiology: Trichoblastoma is a benign neoplasm of follicular germinative cells.
Incidence: Incidence of trichoblastoma is common.
Clinical Signs: Trichoblastomas are solitary epidermal tumors with frequently ulcerated epidermis.
Pathology: On histologic examination, epithelial cells are arranged in anastomosing cords, ribbons, and lobules supported by a fine, fibrovascular stroma.
Diagnosis: Diagnosis is confirmed with histopathology.