Ovarian enterobiasis: a case report

Abstract

Enterobius vermicularis (the pinworm) is the most common intestinal nematode in gastrointestinal tract of humans. It commonly infests the lumen of the intestine but on rare occasions has been found in the wall or in the tissues outside the gastrointestinal tract; female genital tract and peritoneum being the commonest sites. It is usually seen as an incidental finding. This is a case of 29-year-old female presented for elective sterilization. A tiny nodule was noted on the surface of ovary during procedure which was sent for histopathological examination. Lesion was composed of necrotic areas and inflammatory cells with cross section of a degenerated worm. The features of the eggs were diagnostic of Enterobius vermicularis. Multiple histologic sections may be required to establish diagnosis in older lesions as in this case.

The neglected role of Enterobius vermicularis in appendicitis: A systematic review and meta-analysis

“…Couple of possible hypotheses explained the correlation between E. vermicularis and appendicitis of which mostly suggested ectopic migration of the parasite [23,24]. Occasionally, erratic migration of eggs and larvae can elicit granuloma formation in the appendix [24], kidney [25], peritoneal cavity [26], male urinary tract [27], and female genital tract [28] which may lead to misdiagnosis. In the case of appendicitis, release and accumulation of eggs from female E. vermicularis may lead to the obstruction and inflammation of the appendix [29].…”

Study of the most prevalent parasitic diseases especially pinworm among children aged (5-12years) in various areas of Dhi Qar Governorate

“…11 Several potential hypotheses have been proposed to elucidate the correlation between E. vermicularis and appendicitis, with the prevailing notion being the ectopic migration of the parasite. 12 Intermittently, the irregular migration of eggs and larvae has the potential to induce the development of granulomas in various anatomical locations, such as the appendix, 12 kidney, 13 peritoneal cavity, 14 male urinary tract, 15 and female genital tract, 16 thereby potentially resulting in diagnostic errors. In the context of appendicitis, the obstruction and inflammation of the appendix can occur as a result of the release and accumulation of eggs from female E. vermicularis.…”

Management and Incidence of Enterobius vermicularis Infestation in Appendectomy Specimens: A Cross-Sectional Study of 6359 Appendectomies

“…Enterobiasis, a parasitic infection caused by the pinworm Enterobius vermicularis , is characterized by symptoms such as perianal itching, insomnia, restlessness, loss of appetite, weight loss, irritability, stomach pain and nausea, and it can manifest as vulvovaginitis, ileocolitis, mesenteric abscess, salpingitis and appendicitis or be asymptomatic [ 14 , 15 ]. In addition, enterobiasis has been shown to cause the formation of granulomas in the kidney, peritoneal cavity, female genital tract, male urinary tract and appendix, often leading to misdiagnosis of the disease itself [ 7 , 15 , 16 , 17 , 18 , 19 , 20 , 21 ].…”