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A 22-year-old man was born in Bangladesh, had a history of treated pulmonary tuberculosis at 11 years of age, and has lived in the United States for eight years with no symptoms. He presented with pain and tenderness of the right iliac fossa. A computer tomogram of the abdomen demonstrated an edematous appendix and abdominal lymphadenopathy. The patient underwent a laparoscopic appendectomy, removal of a mesenteric lymph node, and liver biopsy. Multiple liver plaques (arrow head) and enlarged mesenteric lymph nodes were seen (Figure 1A
, arrow). Histopathology showed liver granulomata with multinucleated giant cells (Figure 1B
). Caseating granulomata largely replaced the lymphoid architecture of the excised lymph node but was acid fast bacilli (AFB) stain-negative (Figure 1C
). Mycobacterium tuberculosis grew from culture of the lymph node. The appendix showed neutrophils in its wall and no granuloma. The patient received anti-tuberculosis therapy and recovered.
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Received June 6, 2008. Accepted for publication June 25, 2008.
* Address correspondence to Fouad N. Boctor, Laboratory Medicine M.C. 01-31, Geisinger Medical Center, 100 N. Academy Ave., Danville PA 17822. E-mail: fnboctor{at}Geisinger.edu ![]()
Authors addresses: Fouad N. Boctor, Laboratory Medicine, M.C. 01-31, Geisinger Medical Center, 100 N. Academy Ave., Danville, PA 17822, Tel: 570-214-8063, Fax: 570-271-6105, E-mail: fnboctor{at}Geisinger.edu. Sundara R. Sridhar, Department of Pathology, Coney Island Hospital, 2601 Ocean Parkway, Brooklyn, NY 11235, E-mail: sridhar126{at}yahoo.com.
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