Staining readily with eosin; pertaining to eosinophils or to eosinophilia.
- cartilaginous e. streaks — streaks of eosinophilic matrix in cartilage. Some are normal zones of development, others represent areas of matrix degeneration and osteochondrosis.
- e. chemotactic factor — a primary mediator of type I anaphylactic hypersensitivity, it is an acidic peptide (molecular weight 500) released by mast cells, which attracts eosinophils to areas where it is present.
- equine e. chronic dermatitis — acanthosis and hyperkeratosis accompanied by eosinophilic granulomas in pancreas and other epithelial organs.
- feline e. granuloma complex — a collective name given to the lesions of eosinophilic ulcer, eosinophilic plaque (below), and linear granuloma because of similarities in histopathology, clinical course and occasionally simultaneous occurrence in the cat.
- e. granuloma — nodules or plaques that occur on skin or oral mucosa of dogs. Usually not pruritic, but oral lesions can cause some difficulties in eating. The cause is unknown. See also feline eosinophilic granuloma complex (above), equine nodular collagenolytic granuloma.
- e. intestinal granuloma — see angiostrongylus costaricensis.
- e. lung disease — see pie syndrome.
- e. meningitis — see gnathostoma spinigerum.
- e. meningoencephalitis — see sodium chloride poisoning, angiostrongylus cantonensis.
- e. myocarditis — in cattle may be observed in normal animals at slaughter. Histologically there is a predominant eosinophil invasion of the heart muscle. May be accompanied by similar lesions in skeletal muscles.
- e. plaque — well-defined, raised, ulcerated and extremely pruritic lesions that occur on the skin of cats, usually on the abdomen or hindlegs. There are large numbers of eosinophils present in the dermis and sometimes peripheral blood. See also eosinophilic granuloma (above), feline eosinophilic granuloma complex (above).
- e. pneumonia — see pie syndrome.
- e. ulcer — a well-defined ulceration, usually on the upper lip of cats overlying the canine tooth, which is shallow initially but can become extremely erosive and sometimes neoplastic. Mildly irritating to the cat. Called also indolent ulcer, rodent ulcer. See also feline eosinophilic granuloma complex (above).
Bilateral eosinophilic ulcer. By permission from Kummel BA, Color Atlas of Small Animal Dermatology, Mosby, 1989
