The black keratinous cyst. A sign of hemochromatosis.
D004814:Epidermal Cyst / Q000175:diagnosis* / Q000473:pathology; D006432:Hemochromatosis / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D002479:Inclusion Bodies; D007633:Keratins; D008297:Male; D008543:Melanins; D008854:Microscopy, Electron; D008875:Middle Aged; D010859:Pigmentation Disorders / Q000175:diagnosis*; D012867:Skin / Q000473:pathology; D012877:Skin Manifestations
D008543:Melanins; D007633:Keratins