Tissue Cestodes Flashcards
_ is both an intestinal and tissue cestode
T. solium
Defined as larval forms distributed throughout the body
Cysticercosis
* Calcifying cysticerci may aid the diagnosis
Shortest of all tapeworms
Echinococcus
- smallest (accdg to B&S)
- 3-5 proglottids
The definitive host of echinococcus
Canine
* Humans are typically accidental hosts and are considered dead-end because the life cycle of the organism is unable to continue
The most common strain of echinococcus
Dog-sheep strain
Causes hydatid disease
E. granulosus
* Hydatid disease results from the presence of one or more cysts which can develop in any tissue
Brood capsules
Daughter cysts of hydatid cysts which attach to the germinal layer or free-float in the cyst
The scolices in the hydatid fluid resemble rains of sand and are called
Hydatid sand
True / False
E. granulosus may result in cholangitis and cholestasis
TRUE
Cholangitis: Infection of the common bile duct
Cholestasis: interference with the flow of bile from the liver
This hypersensitivity test is used to detect hydatid cysts in the body
Casoni’s intradermal test
Cyst puncture therapy that is used for the inactivation of hydatid cyst sand by injecting the cyst with a cysticidal agent
PAIR (Puncture, aspiration, infection, and reinjection)
or
Puncture, Aspirate, Inject (10% formalin), Reaspirate
Causes the alveolar hydatid disease
Echinococcus multilocularis
The most lethal of all helminthic diseases
E. multilocularis
> Causative agent of alveolar hydatid disease
> It is lethal because it lacks a laminated membrane
E. multilocularis
They are capable of expansion into a multicystic structure (multilocular=may chambers) hydatid cyst
The most common canid tapeworm that causes coenurosis in humans
Taenia multiceps
