Abstract
A 32-year-old male had suffered from persistent dull epigastric pain, constipation, postprandial vomiting, and body-weight loss for 2 months. An abdominal computed tomography (CT) scan showed thickening of the proximal jejunal wall. He was also referred to our center for an fluoro-2-deoxy-D-glucose-positron emission tomography (FDG-PET) scan because his tumor marker CA19-9 was above 800 ng/mL and malignancy was suspected. The PET scan showed an FDG-avid lesion over the upper left abdomen. Endoscopy of the small intestine revealed focal thickening of the mucosal fold and skip ulcer lesions in the jejunum. Culture from the biopsy tissue proved the diagnosis of Mycobacterium tuberculosis infection. No evidence of pulmonary tuberculosis was detected during further evaluation.
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