Pigment cell neoplasms: problems in the diagnosis of early lesions.
D006801:Humans; D008545:Melanoma / Q000175:diagnosis*; D009506:Nevus / Q000175:diagnosis*; D009508:Nevus, Pigmented / Q000175:diagnosis*; D012878:Skin Neoplasms / Q000175:diagnosis*
MELANOMA/diagnosis; NEVUS, PIGMENTED/diagnosis; NEVUS/diagnosis; SKIN NEOPLASMS/diagnosis