title: Oxyuriasis-induced intestinal obstruction in a child--case report.
abstract: OBJECTIVE
  The presentation of an unusual case of the tumor of ileum wall induced by pinworm infection in a 5-years-old child.
  
  
  METHODS
  The record of a 4-years-old boy treated in the department of pediatric surgery was analyzed concerning the diagnostic difficulties. After 6 month from an episode of ileo-cecal intusussception successfully treated with a barium colon enema, the diagnosis of lymphoma was made and the resection of distant segment of small intestine was performed.
  
  
  RESULTS
  No clinical and laboratory features of oxyuriasis could be stated before the onset of disease, during hospitalization and in the follow-up period. The hypertrophied and activated lymphatic tissue with a non-specific inflammatory reaction to the pinworms were seen in the wall of ileum, appendix and mesenteric lymph nodes. No neoplastic cells were found in the microscopic study of ileum, appendix, mesenteric lymph nodes and peritoneal lavage fluid.
  
  
  CONCLUSIONS
  The proper diagnosis of oxyuriasis may be difficult when the course is atypical. The enterobius vermicularis infestation as an etiologic factor should be taken into account in any case of abdominal pathology. However, the methods routinely used in "acute abdomen" including examinations of blood, urine and stool, repeated ultrasound and CT, are not reliable. As the infestation may mimic neoplasm, the surgical treatment and microscopic examination can be necessary for the final diagnosis in some cases.
authors.affiliation: Department of Pediatric Surgery, Medical University of Bialystok, ul. Waszyngtona 17, 15-274 Bialystok. w.debek@csk.pl
authors.forename: W
authors.initials: W
authors.lastname: Debek
authors.forename: E
authors.initials: E
authors.lastname: Dzienis-Koronkiewicz
authors.forename: A
authors.initials: A
authors.lastname: Hermanowicz
authors.forename: B
authors.initials: B
authors.lastname: Nowowiejska
mesh_terms: D002675:Child, Preschool; D003937:Diagnosis, Differential; D013505:Digestive System Surgical Procedures / Q000379:methods; D006801:Humans; D007077:Ileal Diseases / Q000175:diagnosis* / Q000209:etiology / Q000601:surgery*; D007078:Ileal Neoplasms / Q000175:diagnosis*; D007443:Intussusception / Q000209:etiology / Q000601:surgery*; D008297:Male; D010123:Oxyuriasis / Q000150:complications*