title: A primary hydatid cyst of the gracilis: a case report.
abstract: Primary hydatid disease of the skeletal muscle without systemic involvement is rare. A 40-year-old woman presented with a painful mass in her medial left upper thigh. She was misdiagnosed as having a deep intramuscular abscess and a fine needle aspiration was performed, but the fluid came out crystal clear. Further inquiry revealed that her 16-year-old daughter had been operated on twice for liver and lung hydatid disease. Thus, a provisional diagnosis of hydatid disease was made. An echinococcal haemagglutination test was positive. Ultrasonography and magnetic resonance imaging findings were consistent with a type-2 hydatid cyst showing a 'water-lily' sign. The cystic mass within the left gracilis was resected en bloc. Adjunctive albendazole chemotherapy (400 mg/day) was prescribed for 3 months. At the 22-month follow-up, the patient remained free of symptoms.
authors.affiliation: Department of Orthopaedics and Traumatology, Haydarpasa Numune Training and Research Hospital, Istanbul, Turkey. odurakbasa@yahoo.com
authors.forename: M O
authors.initials: MO
authors.lastname: Durakbasa
authors.forename: O
authors.initials: O
authors.lastname: Kose
authors.forename: N C
authors.initials: NC
authors.lastname: Islam
authors.forename: G
authors.initials: G
authors.lastname: Kilicoglu
mesh_terms: D000328:Adult; D015766:Albendazole / Q000627:therapeutic use; D004443:Echinococcosis / Q000175:diagnosis* / Q000188:drug therapy; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D009140:Musculoskeletal Diseases / Q000175:diagnosis* / Q000188:drug therapy / Q000469:parasitology*
chemical_list: D015766:Albendazole