Enterobius vermicularis Infestation Mimicking Rectal Malignancy

Turkiye Parazitol Derg. 2020 Mar 20;44(1):58-60. doi: 10.4274/tpd.galenos.2019.6617.


Enterobius vermicularis is a common intestinal nematode of humans that can be considered relatively harmless. A polypoid lesion mimicking malignancy was detected in the rectum of a 66-year-old female patient who had been operated for sigmoid colon adenocarcinoma in the past. Histopathological examination of the lesion revealed no malignancy but there was adult E. vermicularis nematodes and eggs. In this case report, we aimed to present an enterobiasis infestation that produces non-necrotizing granuloma tissue in the rectum.

Keywords: Enterobius vermicularis; rectal polyp; malignancy.

Publication types

  • Case Reports

MeSH terms

  • Aged
  • Animals
  • Colonic Polyps / diagnosis*
  • Colonic Polyps / pathology
  • Diagnosis, Differential
  • Enterobiasis / diagnosis*
  • Enterobiasis / surgery
  • Enterobius / isolation & purification
  • Female
  • Humans
  • Rectal Neoplasms / diagnosis*
  • Rectal Neoplasms / pathology