title: [Pigmented cysts. Pigmented epidermal cysts and pigmented trichilemmal cyst].
abstract: The clinical and histopathological picture of the pigmented epidermal cyst and the pigmented trichilemmcyst is illustrated by three case-reports. The pigment is melanin, which is located in the epithelium of the cyst-wall, the corneocytes of the lumen and in macrophages in the dermis. The clinical appearance of melanin pigmented cysts is blue due to the Tyndall-phenomenon.
mesh_terms: D000328:Adult; D001132:Arm; D002648:Child; D003937:Diagnosis, Differential; D004814:Epidermal Cyst / Q000175:diagnosis / Q000473:pathology*; D005145:Face; D005260:Female; D006801:Humans; D007866:Leg; D008297:Male; D008543:Melanins; D012867:Skin / Q000473:pathology*; D012878:Skin Neoplasms / Q000175:diagnosis; D014472:Umbilicus
chemical_list: D008543:Melanins
vernacular_title: Pigmentierte Zysten. Pigmentierte epidermale Zyste und pigmentierte Trichilemmzyste