female, who was observed in a gastroenterology outpatient clinic with a history of abdominal pain and a positive fecal occult blood test. Physical examination was unremarkable. Colonoscopy was performed, and countless pinworms were identified (●" Fig. 1, 2). In the right colon they were observed as a cluster around some feces, resembling a bezoar (●" Fig. 3, 4, 5,●" Video 1). Enterobiasis is th...

A total of 738 samples was collected to survey the helminthic infections of residents in two rural areas near Ulaanbaatar, Mongolia for 2 weeks from July 23 to August 2, 1998. Among 391 scotch-taped slides of anal swabs of children and of young teenagers. Enterobius vermicularis eggs were detected in 138 cases (35.3%). With the fecal samples of 206 Kato-Katz thick smear slides from adults, the ...

Enterobius vermicularis infection, an oro-faecal transmitted parasitosis, is a frequent finding in infant communities. Enterobius vermicularis is located predominantly in the caecum, appendix, and proximal areas of the ileum and colon, even if reports of some rare extra-intestinal cases have appeared in the literature. The case is reported here of a 62-year-old male presenting a mass in the rig...