Tuberculosis (TB) remains an important health problem in Thailand. WHO reported that Thailand is one of the three countries that will have a TB high burden (TB incidence, multidrug-resistant [MDR]-TB incidence, and TB/HIV incidence) between 2016 and 2020. The predicted incidence of tuberculosis in Thai population is 172 per 100,000 and the success rate of treatment is only 80%.

Gastrointestinal tuberculosis is a relatively rare form of extrapulmonary tuberculosis. An incidence rate of 1.5% to 3% has been reported. The most common affected part is ileocecal region, and its involvement on appendix is extremely rare.

The author reported two cases of tuberculous appendicitis, the first one presented with clinically of acute appendicitis and the second one presented with obstructed CA colon.

Keywords: Tuberculous appendicitis, TB appendix, Gastrointestinal tuberculosis