Hydatid Cysts Flashcards
1
Q
In what areas of the world are hydatid cysts endemic?
A
Mediterranean and Middle Eastern Countries
2
Q
What causes hydatid cysts?
A
Echinococcus granulosus
3
Q
An outer fibrous capsule is formed containing multiple small daughter cysts. These cysts are allergens which produce what type of hypersensitivity reaction?
A
A type 1 hypersensitivity reaction
4
Q
90% of the cysts occur in what 2 organs?
A
- Liver
- Lungs
5
Q
If cysts are less than 5cm the patient is usually asymptomatic. What complications can occur as a result of hydatid cysts?
A
- Cysts bursting
- Infection
- Organ dysfunction (biliary, bronchial, renal and CSF outflow obstruction)
- Rupture (classic triad of biliary colic, jaundice and urticaria)
6
Q
What investigation is best and why?
A
CT
It helps to differentiate hydatid cysts from amoebic cysts and pyogenic cysts.
7
Q
How are they managed?
A
Surgery.
