Antro-duodenal tuberculosis causing gastric outlet obstruction--a rare presentation of a protean disease.

Gastroduodenal tuberculosis is a rare location of abdominal tuberculosis. It usually occurs secondary to pulmonary tuberculosis. We report a case of a 63-year-old woman admitted to the referral center for symptoms of upper gastrointestinal obstruction caused by ulcerohypertrophic antroduodenal tuberculosis. The lesion was misdiagnosed as malignancy at endoscopy. Even at surgery, the lesion was considered gastric cancer and imposed an oncologic resection. The diagnosis was established in the presence of giant-cell granulomas with caseating necrosis in the surgical resected specimens. In our case, the rare gastroduodenal location of abdominal tuberculosis occurred as primary tuberculosis, in the absence of other identifiable locations.