title: Histological appearances of the levator palpebrae superioris muscle in the Marcus Gunn phenomenon.
abstract: The levator palpebrae superioris muscles from 12 cases of Marcus Gunn phenomenon were examined histologically by means of histochemistry and morphometry. The appearances were of a neurogenic atrophy with pathological changes occurring in both the affected side and the clinically normal side, suggesting that the causative lesion was located in the central nervous system.
authors.affiliation: Department of Pathology, Queen's University of Belfast, Royal Victoria Hospital.
authors.forename: R W
authors.initials: RW
authors.lastname: Lyness
authors.forename: J R
authors.initials: JR
authors.lastname: Collin
authors.forename: R A
authors.initials: RA
authors.lastname: Alexander
authors.forename: A
authors.initials: A
authors.lastname: Garner
mesh_terms: D000293:Adolescent; D001284:Atrophy; D001763:Blepharoptosis / Q000151:congenital / Q000473:pathology*; D002648:Child; D002675:Child, Preschool; D005143:Eyelids / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D009132:Muscles / Q000473:pathology*