title: Hydatid bone disease of the femur.
abstract: Osseous hydatid disease is caused by the parasitic tapeworm Echinococcus. The species most responsible for hydatid disease is Echinococcus granulosus, endemic especially in sheep-rearing districts like Mediterranean countries and Australia. In Turkey, the exact incidence of human hydatid disease is not known, but < or =34% of asymptomatic farmers have positive serology. Bone hydatidosis is rare, making up 0.5% to 4% of all cases. Patients usually present with pain, swelling, or pathological fracture. There are no specific radiographic signs in affected bone. In the later stages, lytic lesions with a trabeculated pattern, with or without sclerosis, may be seen. Computed tomography (CT) is still the best method for diagnosis and posttherapy follow-up of osseous hydatidosis. On CT, skeletal cystic hydatidosis appears as one or several closely related, well-defined, osteolytic lesions. There may be bone expansion, cortical thinning, cortical destruction, sclerosis, honeycomb appearance, and extension into adjacent soft tissues.
authors.affiliation: Haseki Training Hospital, Clinic of Orthopedics and Traumatology, Aksaray, 34087, Istanbul, Turkey.
authors.forename: Cemal
authors.initials: C
authors.lastname: Kural
authors.forename: Ali Akin
authors.initials: AA
authors.lastname: Ugras
authors.forename: Ibrahim
authors.initials: I
authors.lastname: Sungur
authors.forename: Hayati
authors.initials: H
authors.lastname: Ozturk
authors.forename: Ahmet Haldun
authors.initials: AH
authors.lastname: Erturk
authors.forename: Tansel
authors.initials: T
authors.lastname: Unsaldi
mesh_terms: D000328:Adult; D001847:Bone Diseases / Q000000981:diagnostic imaging* / Q000601:surgery*; D002648:Child; D004443:Echinococcosis / Q000000981:diagnostic imaging* / Q000601:surgery*; D005260:Female; D005269:Femur / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D016896:Treatment Outcome