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PAS Negative Granulomatous Lymphadenopathy in Whipple's Disease, Localization of Whipple Bacillus by EM
Am J Med 83:165-170, Wilcox,G.M.,et al, 1987
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Article Abstract
The diagnosis of Whipple's disease in a 58-year-old man was based on the finding of periodic acid-Schiff(PAS)-positive foamy macrophages on duodenal biopsy and demonstration of the typical bacilliform bodies by electron microscopy.The patient also had generalized peripheral lymphadenopathy with lymph node biopsy showing PAS-negative noncaseating granulomas.Electron microscopic examination of the lymph node specimen demonstrated a small number of typical bacilliform bodies with localization specifically to the granulomas in the lymph node.This finding of bacilliform bodies within PAS-negative noncaseating granulomas has not been reported previously.Localization of the Whipple bacillus specifically to noncaseating granulomas suggests that some patients with the disease may manifest a delayed hypersensitivity reaction to the bacillus.
 
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anorexia
electron microscopy
lymph node biopsy
lymphadenopathy
night sweats
weight loss
Whipple's disease

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