Acute appendicitis, A case report of hyper infection with Enterobius vermicularis

Acute appendicitis is one of the most common causes of abdominal emergent surgical disease worldwide. Enterobius vermicularis, a human intestinal parasite, is reported to be associated with acute appendicitis. We report a case of an 8-years old girl who was admitted to emergency unite with complaints of severe abdominal pain and was diagnosed as acute appendicitis. Microscopic pathological examination showed lymphoid follicle with prominent germinal centers and mantle zones within the appendix wall. Cross-sections of multiple female and male Enterobius vermicularis worms and a few number of  longitudinal sections of  E.vermicularis were seen. vermicularis is one of the most commons human parasitic infections, so the possibility of infection of the appendix with E. vermicularis should be considered in the differential diagnosis of agents of appendicitis. Key words: Appendicitis, Parasite, Enterobius, Khoy