Journal of Clinical Pathology 2006;59:1133-1150
MY APPROACH
An approach to duodenal biopsies
Department of Pathology, University Health Network and Toronto Medical Laboratories, Toronto, Ontario, Canada
Correspondence to:
Correspondence to:
S Serra
Department of Pathology, University Health Network and Toronto Medical Laboratories, 200 Elizabeth Street, 11th Floor, Toronto, Ontario, M5G 2C4, Canada;stefano.serra{at}uhn.on.ca
The introduction of endoscopy of the upper digestive tract as a routine diagnostic procedure has increased the number of duodenal biopsy specimens. Consequently, the pathologist is often asked to evaluate them. In this review, a practical approach to the evaluation of a duodenal biopsy specimen is discussed. An overview of the handling of specimens is given and the normal histology and commonly encountered diseases are discussed. Finally, a description of commonly seen infections is provided, together with an algorithmic approach for diagnosis.
Abbreviations: CMSE, cows milk protein-sensitive enteropathy; CMV, cytomegalovirus; DGM, duodenal gastric metaplasia; DPAS, diastase periodic acid Schiff; EMA, endomysial antibodies; EITCL, enteropathy-type intestinal T cell lymphoma; GFD, gluten-free diet; GSE, gluten-sensitive enteropathy; H&E, haematoxylineosin; IEL, intraepithelial lymphocyte; IPSID, immunoproliferative small intestinal disease; NSAID, non-steroidal anti-inflammatory drug; PAS, periodic acid Schiff; V:C ratio, villous to crypt ratio; TCR, T cell receptor; tTGA, transglutaminase antibody
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