Enterobius vermicularis is one of the most common parasites in the world and the infection rate is higher in children than adults. Although the most common clinical manifestation is perianal pruritus, it may cause other gastrointestinal manifestations. We report one case of appendicitis caused by Enterobius vermicularis. The clinical difference between typical appendicitis and the appendicitis due to Enterobius vermicularis is unclear. The patient had a repetitive Enterobius vermicularis infection for a past year, which was treated with occasional vermicides only. It is considered that the appendicitis is developed from the intractable Enterobius vermicularis infection.

Gastrointestinal tuberculosis is a commonly presenting ileocecal disease. Appendiceal tuberculosis results from secondary to either ileocecal tuberculosis, or tuberculosis at other sites of the abdomen. "Isolated" form of tuberculosis affecting appendix only, without evidence of disease elsewhere, is very rare. We report on two cases of isolated appendiceal tuberculosis initially presenting as acute appendicitis. Each case was proven as tuberculosis by acid fast bacilli or caseous necrosis in pathology. Colonoscopy and abdominal computed tomography showed neither intestinal nor intra-abdominal disease.