What is A company executive, who travels world wide, presents with upper abdominal mass and + ye casoni's test. The organism is - and explain in detail?
Ans. is 'a' i.e., Echinococcus . Upper abdominal mass and positive casoni's test suggest the diagnosis of hydatid cyst caused by Echinococcus. . Casoni test is an immediate (type I) hypersensitivity reaction.