title: Oral vegetable granuloma: ultrastructural and histological study.
abstract: An unusual giant-cell granulomatous inflammatory oral lesion is characterised by the presence of hyaline rings and by a lack of agreement on their nature, opinions ranging from their being hyaline degenerative blood-vessels to remains of leguminous cells. Ten such lesions and a variety of vegetables have been examined in the present investigation. Light-microscopical examination of the lesions revealed the hyaline rings surrounded by inflamed granulation tissue with associated multinuclear giant cells. Electron-microscopical examination showed them to consist of a material similar to that of vegetable cell walls, sometimes with an associated superficial layer of collagen. The observations indicate that the lesions consist of vegetable remains with an associated foreign-body type of inflammatory response.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003094:Collagen; D003594:Cytoplasmic Granules / Q000648:ultrastructure*; D005260:Female; D006099:Granuloma / Q000473:pathology*; D006801:Humans; D006818:Hyalin; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D009059:Mouth Diseases / Q000473:pathology*; D013213:Starch; D014675:Vegetables / Q000009:adverse effects*
chemical_list: D013213:Starch; D003094:Collagen