title: Imaging appearances of atypical hydatid cysts.
abstract: Hydatid disease continues to be a significant health problem in many parts of the world. It can occur in any part of the body, but liver is the commonest site of involvement. The disease may remain asymptomatic for years. Symptoms occur due to compression of local structures or complications like rupture and infection. The diagnosis is clear when typical radiological appearance is observed at the common sites of involvement. Complications give rise to atypical appearances. These coupled with unusual localizations pose diagnostic difficulty. The aim of this pictorial essay is to demonstrate the atypical manifestations of hydatid cysts - atypical either due to complications or the unusual site.
authors.affiliation: Department of Radiology, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India.
authors.forename: Amita
authors.initials: A
authors.lastname: Malik
authors.affiliation: Department of Radiology, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India.
authors.forename: Ranjan
authors.initials: R
authors.lastname: Chandra
authors.affiliation: Department of Pathology, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India.
authors.forename: Rajni
authors.initials: R
authors.lastname: Prasad
authors.affiliation: Department of Pathology, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India.
authors.forename: Geetika
authors.initials: G
authors.lastname: Khanna
authors.affiliation: Department of Radiology, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India.
authors.forename: Brij B
authors.initials: BB
authors.lastname: Thukral
keywords: Endocyst; hydatid cyst; liver; lung; pericyst