title: Xeroderma pigmentosa.
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D002675:Child, Preschool; D006801:Humans; D008297:Male; D012878:Skin Neoplasms / Q000473:pathology*; D014983:Xeroderma Pigmentosum / Q000473:pathology*