Christine Dubray. INFECTIOUS AGENT. The intestinal nematode (roundworm) Enterobius vermicularis. TRANSMISSION. Egg transmission. Pinworm infection, also known as enterobiasis, is a human parasitic disease caused by the pinworm. The most common symptom is itching in the anal area. Enterobius vermicularis(pinworm) andTrichuris trichiura(whipworm) are two of the most common nematode infections biasis.

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Enterobiasis in Ectopic Locations Mimicking Tumor-Like Lesions

In other projects Wikimedia Commons. Enterobius vermicularis threadworm infestation of paraovarian tissue in a woman who has had a hysterectomy. National Center for Biotechnology InformationU. The entire lifecycle — from enteribiasis to adult — takes place in the human gastrointestinal tract of a single human host.

Sterba J, Vicek M. Oxyuridae a distinct species?

Egg transmission occurs by the fecal-oral route, either directly or indirectly via contaminated hands or objects such as clothes, toys, and bedding. Retrieved enterobiasiss August American Academy of Pediatrics; Support Center Support Center.

Scotch Tape applied on the anal area will pick up deposited eggs, and diagnosis can be made by examining the tape with a microscope. If the patient comes from a zone endemic for bilharziasis, the differential diagnosis must include the granulomas caused by the eggs of Schistosoma haematobium or other species of trematodes of the same genus.

Pelvic pain caused by intraperitoneal Enterobius vermicularis threadworm ova with an associated systemic autoimmune reaction. Epididymitis from Enterobius vermicularis: Subscribe to our Newsletter. Adult worms can migrate from the anal area to other sites, including the vulva, vagina, and urethra. Pinworm infestation of the genital tract. June 12, Page last reviewed: Colorectal surgery Parasites of equines Helminthiases Parasitic infestations, stings, and bites of the skin Foodborne illnesses.

Nowadays, recent progress in the biology of pinworms based on techniques of extractive molecular biology can be used to overcome the difficulty of the clinical diagnosis and also to identify the provenance of the pinworm: CiteScore measures average citations received per document published.


Pinworm infection

It occurs either through one of the above-mentioned mechanisms or through so-called oxiutiasis [ 9 ] and, therefore, with the hatching of the eggs outside the anal sphincter followed by a retrograde ascent into the rectum on the part of the emerged larvae [ 10 ]. The movements of the females and the laying of the eggs cause itching, predisposing the passage of the infection ennterobiasis the same patient or other patients through hands which have been contaminated in this way.

The ova appear to be considerably more resistant than the worm itself, and they remain well-preserved even when the latter is scarcely recognizable in the enteroniasis or has completely disappeared. A year-old nomadic Yugoslavian woman without a fixed abode, was referred urgently to Voghera Hospital Northern Italy in January for an acute abdomen. Rectal exploration, which was painful, demonstrated that the mass was located in the perianal subcutaneous tissue.

Granuloma of the liver due to Enterobius vermicularis. Even though it is prevalent in children, in particular in scholastic communities, it is, however, reported in subjects of all ages, sometimes mild and of scarce importance but other times with notable problems due to the frequent involvement of the coenesthesia, complications due to microbic infections as a result of lesions from scratching or not easily controlled chronic enterobjasis which can sometimes be complicated by psychoneurotic involvement.

National Center for Biotechnology Information, U. Medication is the primary treatment for pinworm infection.

Appendiceal enterobiasis—its incidence and relationships to appendicitis. Caldwell JP February The deposited eggs mature in a few hours and contain fully developed larvae becoming infective. Peripheral eosinophilia was not found nor were parasite eggs using the Scotch-tape test. The cause of a pinworm infection is the worm Enterobius vermicularis.


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Infected people should also bathe in the morning and change underwear and bedclothes frequently. The life cycle begins with eggs being ingested. Examining stool samples is not recommended because pinworm eggs are sparse. From a review of the literature, location in the female genital tracts, considering as such also those peritoneals at the pelvic level according to Symmers, [ 27 ] described from the end of the s [ 9 ] to today are not, in reality, so rare as one might think; in fact, we were able to find more than 80 cases, reported in 24 different countries of 3 continents France, UK, USA.

Biology portal Medicine portal. Annals of Tropical Medicine and Parasitology. Create a free personal account to access your subscriptions, sign up for alerts, and more. Parasitological study on the Eskimos in the Kotzebue area of Alaska. The scientific works include the areas of Clinical, Endoscopic, Surgical, and Pediatric Gastroenterology, along with related disciplines. Journal of the American Medical Association.

Treatment is typically with two doses of the medications mebendazolepyrantel pamoateor albendazole two weeks apart.

Enterobiasis in Ectopic Locations Mimicking Tumor-Like Lesions

The current teaching in medical schools, unjustly relegates oxyuriasis to a very limited space. Safer Food and Water: Infected people should also practice personal hygiene measures such as washing oxiugiasis before eating or preparing food, keeping fingernails short, not scratching the perianal region, and not biting nails.

Sopra una cisti impiantata sulla salpinge contenente uova di Oxyuris vermicularis. Privacy Policy Terms of Use. Infectious diseases Parasitic disease: The enterobiiasis is based on the histological finding. What’s Safer Food and Water: Unilateral salpingitis due to Enterobius vermicularis.