. _:b661832 . "Disease or Syndrome"^^ . "Cutaneous_Precancerous_Condition"^^ . "Precancerous Skin LesionSYNCI" . "Cutaneous Precancerous Condition"^^ . "Cutaneous Precancerous ConditionPTNCI" . "A skin disease marked by scaly or thickened patches on the skin, and often caused by prolonged exposure to arsenic. The patches often occur on sunexposed areas of the skin and in older white men. These patches may become malignant (cancerous).NCI-GLOSS" . _:b661832 . "Cutaneous Precancerous Condition"^^ . . "Precancerous DermatosisSYNCI" . _:b661832 . . "CL054559"^^ . "Cutaneous Premalignant ConditionSYNCI" . "C8957"^^ . "precancerous dermatosisPTNCI-GLOSSCDR0000044376" . "Header_Concept"^^ . _:b661832 .