Last updated: Saturday, 03, April, 2004
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Endoscopic biopsy or surgical biopsy.
Biopsies for Hirschsprung's disease require at least the submucosa to be included.
Fresh tissue: for frozen section and evaluation of Hirschsprung's disease, molecular genetics (tumours including lymphoma).
Fixed tissue: for light microscopy, immunohistochemistry, electron microscopy (special fixative).
Diagnosis of suspected acute or chronic inflammatory bowel disease; chronic watery diarrhoea; infective colitis.
Diagnosis of localised lesions such as ulcers, polyps and stenotic areas; surveillance for dysplasia in chronic colitis; tumour type, grade and stage.
Identification of amyloid deposits.
Diagnosis of Hirschsprung's disease and mapping the extent of aganglionic segment.
Report by pathologist identifies disease process, including tumour type, grade and stage.
Motile trophozoites containing ingested red cells are diagnostic of Entamoeba histolytica infection.
The diagnosis of schistosomiasis may be made by finding characteristic ova/parasites in a rectal biopsy.
Emory TS et al. Atlas of Gastrointestinal Endoscopy and Endoscopic Biopsies. Armed Forces Institute of Pathology and American Registry of Pathology 2000.