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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Infectious diseases Parasitic disease: Enterlbiasis Policy Terms of Use. This method should be conducted on 3 consecutive mornings and before washing. Previous article Next article.

Enterobiasis (oxiuriasis) familiar | Revista de Gastroenterología de México

Pulmonary nodule caused by Enterobius vermicularis. From Wikipedia, the free encyclopedia.

Abstract Both the clinical and the histopathological diagnostic difficulties of oxyuriasis in unusual sites and their importance from a clinical point of view are pointed out. Itchy anal area [1]. On physical examination, a rounded mass having a diameter of about 2 cm, externally palpable in the posterior quadrants of the perineum, highly painful at palpation, having a hard-elastic consistency, with the skin moderately reddened was noted.

Retrieved from ” https: The third option is microscopic examination of samples taken from under fingernails; samples should be taken before handwashing. Each is given as a single dose and repeated in 2 weeks. Their Development and Transmission. The authors report two ectoptic cases of enterobiasis observed in Northern Italy, one located in a fallopian tube of a year-old woman and the other in a perianal subcutaneous tissue of a year-old man, mimicking tumor-like lesions.

In other projects Wikimedia Commons. In two cases, the diagnosis was cytological, with typical eggs having been found by means of fine needle aspiration [ 3940 ]. Granuloma of the liver due to Enterobius vermicularis. Purchase access Subscribe to JN Learning for one year.


Pinworm infections commonly occur in all parts of the world. Cook GC September Enterobius vermicularis Nematoda, Oxyuridae is a very common parasite, perhaps the most common among the helminths which are considered strictly specific for man [ 1 ], even if it has been argued recently that E. Bambuti group Zaire Rivista de Parassitologia.

Human enterobiasis in evolution: Create a free personal account to make a comment, download free article PDFs, sign up for alerts and more. Indian Journal of Ophthalmology. Drugs of choice are mebendazole, albendazole, or pyrantel pamoate which is available without prescription.

Enterobiasis in Ectopic Locations Mimicking Tumor-Like Lesions

Other more or less linear structures, probable remnants in an advanced regression phase of the uterine wall of the nematode, were also visible at the periphery of the egg cluster Figure 1 b. Colorectal surgery Parasites of equines Helminthiases Parasitic infestations, stings, and bites of the skin Foodborne illnesses.

Parasitosis in these locations is easily able to be diagnosed by means of specific parasitological methods perianal swabs or the Scotch cellophane tape test. Both adnexa were removed.

Pinworm infection

Nematode Parasites of Vertebrates: Create a free personal account to download free article PDFs, sign up for alerts, customize your enterobiasix, and more. Regarding the second case, the presence of E.

After the eggs have been initially deposited near the anus, they are readily transmitted to other surfaces through contamination. Practical guide to diagnostic parasitology. Pinworms Enterobius vermicularis [3]. Normally, eosinophilia is not reported.


Seeing the worms or eggs [1]. Secondary bacterial infection can occur from skin irritation. Indeed, according to Nakano et al.

An indirect transmission by air has also been shown for human enterobiasis, since its oxiuriasid eggs are capable of being released in the air and inhaled oxiuriasiz dust [ 5 ].

The diagnosis is based on the histological finding. Digital exploration of the rectum detects the presence of the nodule, more or less firm, painful at palpation, having a diameter of cm. The second option is microscopic identification of worm eggs collected by touching transparent tape to the anal area when the person first awakens in the morning.

Archived from the original on 7 December The cause of a pinworm infection is the worm Enterobius vermicularis. Its existence, well known since ancient times, is not clearly influenced by climatic differences so that the helminths can really be considered cosmopolitan, found from tropical zones [ 6 ] to polar zones [ 7 ] and from different socioeconomic situations [ 8 ].

This page was last edited on 31 Decemberat Discussion In the first case, it would seem, therefore, that the worm had gone back up the oxiurizsis and, after penetrating the thickness of the oxiuriass wall which had probably already been damaged by other infective enterobiasos, it was halted by the defensive reaction of the host tissues and remained among the inflammatory cells. National Library of Medicine.