
Etiology OF ECHINOCOCCOSIS OR HYDATID DISEASE:
* · After man eats the eggs, the embryos / larva penetrate the intestine,
enter the portal circulaÂtion and go to the liver and lungs.
The larvas develop into hydatid cysts.
* Daughter cysts develop inside the hydatid cysts.
* New larvas also develop in brood capsules which are cystic structures inside the hydatid cysts.
* The cysts increase in size and may even rupÂture.
# SympÂtoms in the involved organ.
# · The liver and lungs are commonly involved.
# · Cysts may be accidentally detected on x-ray or ultrasound.
# · There is abdominal pain or palpable mass in the region of liver.
# · There may be compression of bile duct, biliary obstruction, jaundice.
# · Rupture or leak of cyst produces fever, itching, urticaria, eosinophilia and even anaphylaxis.
# · Pulmonary hydatid cysts may rupture into bronÂchial tree or peritoneal cavity.
# · There may be cough, chest pain, hemoptysis.
# · Cysts may also be present in bone, CNS, heart, pelvis.
# · The cysts may metastasize to spleen, lungs and brain.
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