Cestodiasis


Also found in: Dictionary, Thesaurus, Medical.

Cestodiasis

 

a helminthic disease of humans and animals caused by a tapeworm (cestode). In man helminths are parasitic in the intestine (for example, adult tapeworms and the broad fish tapeworm) and various other organs and tissues. The larval stages of Echinococcus, Alveococcus, and Cysticercus concentrate in the liver, brain, and eyes. Infection occurs after the parasite’s eggs (for example, the dwarf tapeworm and Echinococcus) or larvae (for example, beef and pork tapeworms) enter the alimentary canal. Infestation causes gastrointestinal disorders, anemia, and disturbances of the liver, nervous system, eyes, and other organs and systems. The most common cestodiases affecting humans are diphyllobothriasis, hymenolepiasis, teniasis, and echinococcosis.

Cestodiases of animals are caused chiefly by cestodes of the two orders Pseudophyllidea and Cyclophyllidea. The season when infestation takes place and the site where the parasites concentrate vary with the species of the causative agent. Adult cestodes may be parasitic on the intestinal mucosa, causing it to become inflamed. In echinococcosis the larval stages of the cestodes form cysts in the liver, and the larvae continue to live inside the cysts. In coenurosis cysts develop in the brain, intermuscular tissue, and subcutaneous tissue; the symptoms of the disease vary with the organ or tissue affected. Intestinal cestodiases are associated with diarrhea. In sheep coenurosis of the brain causes the animals to move involuntarily in a circle and throw their head back. Echinococcosis produces pain in the liver region. Diseased animals grow slowly, become emaciated, and sometimes die. Prevention requires worming of the animals and observance of sanitary rules in their maintenance.

REFERENCE

Leikina, E. S. Vazhneishie gel’mintozy cheloveka, 3rd ed. Moscow, 1967.
References in periodicals archive ?
The disease caused by tapeworms is known as cestodiasis. As a systematist, Hoberg carefully examines living species of tapeworms and other parasites and describes them by meticulously detailing their distinguishing characteristics-morphological, biochemical, and molecular.
Single dose treatment with praziquantel (Cesol R, EmBay 8440) of human cestodiasis caused by Diphyllobothrium pacificum.
Considerando que la himenolepiasis es una de las cestodiasis mas frecuentes en paises en vias de desarrollo como el Peru y que existen, a nivel experimental, resultados exitosos de vacunacion contra las infecciones por diversos helmintos, el presente trabajo estuvo orientado a evaluar el efecto protector de oncosferas homologas en Mus musculus contra la infeccion por Hymenolepis nana var.
Diphyllobothriosis is a fishborne cestodiasis caused by infection with adult tapeworms belonging to the genus Diphyllobothrium Cobbold, 1858 (1-5); the most frequent etiologic agents are D.