Background: Hydatid disease or echinococcosis is an important zoonosis, and a serious public health problem both globally, and especially in endemic country like India. This disease is usually found in liver and lungs, but unusual sites in the body can pose a diagnostic challenge. The aim of this study was to evaluate the epidemiology, clinical picture and different localisations of hydatid cyst and to suspect this disease in any cystic lesion affecting any organ in the body , especially in endemic areas of the world. Material and Methods: Total of 72 cases were analysed and a retrospective descriptive study was carried out in our institute over a period of 6 years from 2010 to 2015. We screened all the histopathology records diagnosed with hydatidosis and details are collected from their case sheet. Results: Out of 72 patients, the dominant sex affected by the disease were females 45(62.5%) and 27(37.5%) males. Hydatidosis more commonly affect in the second decade of life followed by third decade. Overall pain in abdomen was the most common presenting complaint. Among the unusual sites most common presentation was solitary, cystic swelling. Liver was the most commonly affected organ. We reported 11 cases of hydatidosis in unusual localisations. Conclusion: Hydatid disease is still a problem and burden in rural regions of India. A high index of suspicion, radiological investigations as well as histopathological examination is necessary in establishing the diagnosis of hydatid disease at unusual sites in the body.

Keywords : Hydatid Disease; Echinococcosis; Unusual.