title: Osseous Hydatidosis of Femur in a Patient with Fracture Non-union: An Uncommon Entity.
abstract: Hydatid disease caused by the larval form of the parasitic tapeworm,Echinococcus granulosus, commonly affects the liver and lungs. Bone involvement by Hydatid is extremely uncommon and is reported in 1-3% of cases. It is often a dormant disease, presenting at a late stage with non-specific clinical and radiological findings. Usually they occur as an isolated entity without liver/lung involvement and a clinical suspicion of this disease is not possible. We report a rare case of Hydatid cyst of femur in a 25-year-old female, with unresolving non-union of fracture for five years. The occurrence of this disease in atypical locations and lack of a specific radiological sign makes the diagnosis challenging and it is important for the orthopaedicians and pathologists to be aware of this entity for a precise diagnosis.
authors.affiliation: Assistant Professor, Department of Pathology, Christian Medical College , Vellore, Tamil Nadu, India .
authors.forename: Kiruthiga Kala
authors.initials: KK
authors.lastname: Gnanasekaran
authors.affiliation: Associate Professor, Department of Pathology, Christian Medical College , Vellore, Tamil Nadu, India .
authors.forename: Anne Jennifer
authors.initials: AJ
authors.lastname: Prabhu
authors.affiliation: Senior Resident, Department of Radiology, Christian Medical College , Vellore, Tamil Nadu, India .
authors.forename: Shyjumon
authors.initials: S
authors.lastname: George
keywords: Cyst wall; Cystic echinococcosis; Hydatid cyst