Enterobius (Oxyuris) vermicularis of the pelvic peritoneum--a cause of infertility

Enterobius vermicularis salpingitis seen in the setting of ectopic pregnancy in a Malaysian patient

We report a rare and unusual case of invasive Enterobius vermicularis infection in a fallopian tube. The patient was a 23-year-old Malaysian woman who presented with suprapubic pain and vaginal bleeding. A clinical diagnosis of ruptured right ovarian ectopic pregnancy was made. She underwent a laparotomy with a right salpingo-oophorectomy. Histopathological examination of the right fallopian tube showed eggs and adult remnants of E. vermicularis, and the results were confirmed using PCR and DNA sequencing.

Enterobious vermicularis (pinworm) infestation of the vulva: report of 2 cases of a pseudoneoplastic lesion mimicking squamous carcinoma

Enterobious Vermicularis (pinworm) infestation outside the gastrointestinal tract is rare. We report 2 patients with vulval involvement, one of whom presented with a clinically suspicious, rapidly growing mass. The histology of both lesions showed similar features of epidermal proliferation in the form of hyperkeratosis, acanthosis, and papillomatosis; this pseudoepitheliomatous hyperplasia raised the possibility of a well-differentiated squamous carcinoma. There was associated inflammation in both cases, including large numbers of eosinophils in 1 case. On the surface or within the keratin layer, structures with the morphology of enterobious vermicularis eggs were identified. In reporting this unusual pseudoneoplastic phenomenon, we stress the necessity for the pathologist to consider and look for parasites in proliferative squamous lesions of the vulva, especially when there is an associated inflammatory infiltrate rich in eosinophils.

Enterobius vermicularis infestation of a hysterectomy specimen in a patient with a colonic reservoir

A 43-year-old woman (gravida 2, para 1011) with a history of uterine leiomyomata and a Barnett colonic reservoir underwent a supracervical hysterectomy. Final pathology revealed Enterobius vermicularis within the myometrium and adnexal vasculature. Infection may have occurred through a modified mode given the presence of a Barnett colonic reservoir and absence of an anus.

Pelvic pain caused by intraperitoneal Enterobius vermicularis (threadworm) ova with an associated systemic autoimmune reaction

AIM

The aim of this paper, based on a case study was two-fold; firstly to review the sites and gynecologic complications of ectopic Enterobius vermicularis and secondly study the autoimmune accompaniments of parasitic infestations.

METHODS

A case of intraperitoneal ectopic Enterobius vermicularis, with accompanying autoimmune signs and symptoms, is presented and its response to surgical and medical treatment described. A medical literature search was carried out into the subject of ectopic Enterobius vermicularis, particularly from the gynecologic perspective along with a study of autoimmune activation associated with parasitic infestation.

RESULTS

Pelvic pain was found to be caused by chronic inflammation from ectopic Enterobius vermicularis. This was treated both surgically and medically, with the surgical treatment proving to be inadequate but with a good response to immune modification. In the literature ectopic Enterobius vermicularis was found to be treatable surgically.

CONCLUSION

Ectopic Enterobius vermicularis was found to create symptomatic inflammatory lesions that could be treated surgically and an associated autoimmune response treatable by immune modification.

Unilateral salpingitis due to enterobius vermicularis

A case of unilateral salpingitis caused by Enterobius vermicularis presenting as a painful adnexal mass in a 28-year-old woman is reported.

Intraperitoneal Enterobius vermicularis infection: a case report

BACKGROUND

Enterobius vermicularis in an ectopic location usually represents an incidental finding in tissue specimens in a patient without symptoms. However, the parasite can lead to inflammation and symptoms in rare cases.

CASE

A 36-year-old woman had an abdominal hysterectomy for menorrhagia, dyspareunia, and lower abdominal pain. Two small nodules from the posterior aspect of the left broad ligament as well as the uterus were sent for histologic examination. The pathologic findings confirmed the diagnosis of "granulomatous peritoneal nodules due to E. vermicularis." Within the nodules were aggregates of ova of E. vermicularis.

CONCLUSION

This case reminds us that such granulomatous lesions can simulate leiomyoma, fibroma, endometrioma, and tuberculous or malignant lesions. It is important to be aware of this resemblance to avoid unnecessary surgical intervention.