title: Histopathological features of congenital fundus lesions in familial adenomatous polyposis.
abstract: We report the light and electron microscopic findings for two lesions from two patients who died of complications of familial adenomatous polyposis. In the first case microscopy of a small (100 to 200 mu), uniformly dark lesion (the commonest type seen in this condition) showed enlarged retinal pigment epithelial cells with an increased number of pigment granules. This is consistent with the term "hypertrophy of the retinal pigment epithelium", currently used to describe these lesions. In the second case we sectioned a larger (1000 to 1500 mu), oval, grey lesion from the posterior pole. The pigment epithelium was normal, but between it and outer retina was an unusual choristoma consisting largely of myelinated axons and astrocytes.
authors.affiliation: Department of Ophthalmology, University of Toronto, Ont.
authors.forename: J A
authors.initials: JA
authors.lastname: Parker
authors.forename: V I
authors.initials: VI
authors.lastname: Kalnins
authors.forename: J H
authors.initials: JH
authors.lastname: Deck
authors.forename: Z
authors.initials: Z
authors.lastname: Cohen
authors.forename: T
authors.initials: T
authors.lastname: Berk
authors.forename: J B
authors.initials: JB
authors.lastname: Cullen
authors.forename: A A
authors.initials: AA
authors.lastname: Kiskis
authors.forename: W J
authors.initials: WJ
authors.lastname: Ke
mesh_terms: D011125:Adenomatous Polyposis Coli / Q000150:complications*; D000328:Adult; D005654:Fundus Oculi; D006801:Humans; D008297:Male; D008875:Middle Aged; D010786:Photoreceptor Cells / Q000473:pathology; D010857:Pigment Epithelium of Eye / Q000648:ultrastructure; D012160:Retina / Q000648:ultrastructure*; D012164:Retinal Diseases / Q000151:congenital / Q000209:etiology / Q000473:pathology*