title: Ectopic respiratory mucosa in the skin associated with skeletal malformation and polydactyly.
abstract: We report a 19-year-old man with congenital erythematous plaque on his left arm that was found histopathologically to be composed of respiratory mucosa. The patient had a triphalangeal thumb and polydactyly in the left hand. This is, to our knowledge, only the third case of ectopic respiratory epithelium presenting as a superficial lesion in the skin to be reported in the English literature, and the first case associated with skeletal malformation and polydactyly.
authors.affiliation: Department of Medicine, King Faisal Specialist Hospital & Research Centre, PO Box 3354, Riyadh 11211, Saudi Arabia.
authors.forename: A
authors.initials: A
authors.lastname: Alfadley
authors.forename: B
authors.initials: B
authors.lastname: Hainau
authors.lastname: Al Aboud K
authors.forename: I R
authors.initials: IR
authors.lastname: Hamadah
authors.lastname: Al Hawsawi K
mesh_terms: D000328:Adult; D001132:Arm; D001133:Bones of Upper Extremity / Q000002:abnormalities*; D002828:Choristoma / Q000150:complications* / Q000473:pathology; D006801:Humans; D008297:Male; D017689:Polydactyly / Q000150:complications*; D020545:Respiratory Mucosa; D012871:Skin Diseases / Q000150:complications* / Q000473:pathology; D013933:Thumb / Q000002:abnormalities