Tehran University of Medical Sciences Iranian Journal of Parasitology 1735-7020 12 4 2017 12 26 638 641 Biserka PIGAC Pathology, Cytology and Forensic Medicine Unit, Varaždin General Hospital, Varaždin, Croatia Silvija MAŠIĆ Clinic for Oncology and Nuclear Medicine, University Hospital Center Sestre Milosrdnice, Zagreb, Croatia Valentina MAŠIĆ Training and Education Center 'Vinko Bek', Zagreb, Croatia 2017 12 26 2017 12 26 Enterobius vermicularis is an intestinal nematode of humans and the most common helminth infection. Main transmission path is direct contact between infected and uninfected person meaning ingestion of the eggs. Human infections are usually asymptomatic or manifest as perianal itching. Although ectopic locations are uncommon, Enterobius can occasionally be detected in appendix, kidney, male urinary tract and female genital tract. We present a case from Varaždin General Hospital, Varaždin, Croatia in 2012, involving a 90-yr-old female patient who underwent hysterectomy leading to accidental finding of E. vermicularis in the uterus despite being asymptomatic for enterobiasis. Since there were no signs and symptoms of parasitic infection, no antiparasitic drugs were administered. Parasite was not observed during macroscopic examination, yet microscopic examination of the material demonstrated helminth within endometrium surrounded by dense inflammatory infiltrate, predominantly lymphocytes and some eosinophils. Internal structures of the parasite were collapsed, while well-developed musculature and cuticle were preserved. We present this case to educate and remind physicians on this parasitosis as possible diagnosis. Although non-gastrointestinal locations of Enterobius infestation are rare, this infection should be considered in patients with abdominal pain, genitourinary symptoms, and pelvic pain in order to apply appropriate treatment and prevent further complications. https://ijpa.tums.ac.ir/index.php/ijpa/article/view/1939 https://ijpa.tums.ac.ir/index.php/ijpa/article/download/1939/800