A unique presentation of trichofolliculoma in amniotic band syndrome

Trichofolliculoma is a rare hair follicle hamartoma. We report a case of trichofolliculoma on the scalp in a male with constriction band syndrome. A 31-year-old male patient presented with a single painful, slowly growing lesion over the scalp for 6 months. Dermoscopy revealed an “erupting volcano” pattern composed of a central dilated pore with tufted white hairs perforating and surrounded by a few vessels. Histopathological examination confirmed the diagnosis. An X-ray of the left arm showed a type 2 constriction ring. To our knowledge, this is the first report of trichofolliculoma in amniotic band syndrome.