Abstract
A 51-year-old man presented with watery diarrhea and 7-kg weight loss for six months. As computed tomography scans showed multiple mesenteric and retroperitoneal lymphadenopathy, 18F-fluoro-deoxyglucose positron emission tomography was performed, showing marked accumulation in the jejunum. Enteroscopy disclosed diffuse yellow-white swollen villi in the jejunum and biopsies revealed clubbed villi with marked periodic acid-Schiff-positive foamy macrophages. The electron microscopic examination showed numerous extracellular bacilli and bacillary forms of degradation in the macrophages. 16S rRNA PCR revealed Tropheryma whipplei in the mucosal specimens, making the diagnosis of Whipple's disease. Therapy with ceftriaxone followed by long-term trimethoprim-sulfamethoxazole was effective. Whipple's disease is briefly discussed.
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