title: Respiratory epithelium lined cysts presenting in the orbit without associated mucocele formation.
abstract: Three patients presented with orbital cysts lined with upper respiratory tract epithelium. In each case there was no evidence of an associated mucocele. Two patients had a past history of orbital trauma, and the third had had preceding sinus surgery. It is postulated that these cysts were caused by traumatic herniation of nasal sinus epithelium cells into the orbit.
mesh_terms: D000328:Adult; D003560:Cysts / Q000473:pathology*; D004848:Epithelium / Q000473:pathology; D006801:Humans; D008297:Male; D009078:Mucocele / Q000473:pathology; D009915:Orbit / Q000293:injuries; D009916:Orbital Diseases / Q000473:pathology*; D012137:Respiratory System / Q000473:pathology