Cestodes: Tapeworms ʹ Cestode County Carnival

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Questions and Answers

What is the intermediate host for Taenia solium?

  • Sheep
  • Pig (correct)
  • Human
  • Cow

What is the disease caused by the ingestion of eggs of Taenia solium?

  • Neurocysticercosis
  • Cystosarcosis (correct)
  • Hydrocephalus
  • Cobalamin deficiency

What is the treatment for neurocysticercosis?

  • Niclosamide
  • Albendazole
  • Praziquantal
  • Abendozle (correct)

What is the deficiency caused by Diphyllobothrium latum?

<p>Vitamin B12 deficiency (B)</p> Signup and view all the answers

What is the characteristic of Diphyllobothrium latum?

<p>It is the largest tapeworm (A)</p> Signup and view all the answers

What is the name of the tapeworm that causes Echinococcus granulosus?

<p>Echinococcus granulosus (C)</p> Signup and view all the answers

What is the characteristic of Taenia saginatum?

<p>Its intermediate host is a cow (A)</p> Signup and view all the answers

What happens when cysts rupture during removal?

<p>An anaphylaxis reaction occurs (A)</p> Signup and view all the answers

What is the name of the disease caused by ingestion of larvae?

<p>Taeniasis (B)</p> Signup and view all the answers

What is a complication of Cysticercosis in the digestive system?

<p>Appendicitis (A)</p> Signup and view all the answers

How is Cysticercosis typically detected?

<p>Stool sample, brain imaging, or anti-cysticercal antibodies (B)</p> Signup and view all the answers

What is the name of the disease caused by ingesting eggs?

<p>Cysticercosis (B)</p> Signup and view all the answers

What is the name of the reaction that occurs when larvae die in tissue?

<p>Inflammatory reaction (B)</p> Signup and view all the answers

What is the name of the larval stage that lodges into tissue?

<p>Taenia solium larvae (B)</p> Signup and view all the answers

What is a characteristic of the cysts in the liver on CT scans?

<p>Eggshell calcifications (D)</p> Signup and view all the answers

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Study Notes

Cestodes: Tapeworms

  • Tinnea Soleum and Sagginatum are two types of tapeworms.
  • Intermediate hosts: pig for T. Solium and cow for Sagginatum.
  • T. Solium has hooks on its proglottid heads, seen on O&P (Ova and Parasite) examination.

Neurocysticercosis

  • Caused by ingestion of T. Solium eggs from contaminated water or food.
  • Characterized by lesions in the brain, eyes, and skin, resembling Swiss cheese on MRI.
  • Symptoms include seizures and those of hydrocephalus.

Treatment and Prevention

  • Praziquantal is used to treat tapeworm infections.
  • Abendazole is used to treat neurocysticercosis.
  • Ingestion of eggs leads to cysticercosis, which can be prevented by avoiding contaminated food and water.

Diphyllobothrium Latum (Fish Tapeworm)

  • Causes diarrhea and is associated with B12 deficiency, leading to megoblastic anemia.
  • Cobalamin (B12) is essential to prevent anemia.
  • Can grow up to 10 feet long, and proglottid segments are seen on stool O&P examination.

Echinococcus Granulosus

  • Caused by ingestion of contaminated dog feces, leading to hydatid cysts.
  • Sheep are intermediate hosts.
  • Characterized by "eggshell calcifications" in the liver on CT.
  • Rupture of cysts can cause anaphylaxis reaction, requiring injection with a solution to kill cysts before removal.

Taeniasis and Cysticercosis

  • Taeniasis is asymptomatic and caused by ingestion of larvae.
  • Cysticercosis is caused by ingestion of eggs, not larvae, and involves the development of extraintestinal encysted larval forms in various organs, most commonly the CNS.
  • Complications include appendicitis, obstruction of bile and pancreatic ducts.
  • Detected by stool sample, brain imaging, or anti-cysticercal antibodies.

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