Hydatid disease of bone

A case of primary hydatid disease of the right femur is reported that presented with pathological fracture and was diagnosed at the time of exploration for biopsy. The patient was treated by removal of all cysts, irrigation with scolicidal solution, bone grafting and immobilisation of the fracture followed by four cycles of oral Albendazole. Eosinophilia and serological tests reverted to normal but the patient died due to acute myocardial infarction six months later. This uncommon condition should be considered in the differential diagnosis of pathological fractures, bone pain or osteolytic lesions, especially in patients of rural and farmer background.