title: Primary sacral hydatid cyst. A case report.
abstract: This case report highlights an unusual osseous spinal presentation of a well described disease, hydatidosis. A 59-year-old woman presented with increasing back pain and bilateral radiculopathy. Examination disclosed symptoms of spinal stenosis and urinary incontinence. Radiographs showed an expansive lytic lesion affecting the pelvic bones with destruction of the bone cortex. Laboratory analyses were performed and the patient underwent CT and MRI studies. Serology for Echinococcus was positive. When assessing sciatica, low back pain or lower limb weakness the pelvic cavity should be examined for hidden disease that might explain the neurological symptoms. Hydatid disease of bone should be considered in the differential diagnosis of any bone mass discovered in the human body. Diagnosis was delayed in this case because the pelvic cavity was not studied when radiculopathy symptoms started and there was no coexisting visceral involvement.
authors.affiliation: Hospital Universitari Vall d'Hebron, Departament de Cirurgia Ortopèdica y Traumatologia, Barcelona, Spain. njoshijubert@gmail.com
authors.forename: Nayana
authors.initials: N
authors.lastname: Joshi
authors.forename: Alejandro
authors.initials: A
authors.lastname: Hernandez-Martinez
authors.forename: Roberto
authors.initials: R
authors.lastname: Seijas-Vazquez
mesh_terms: D015766:Albendazole / Q000627:therapeutic use; D000818:Animals; D000977:Antiparasitic Agents / Q000627:therapeutic use; D003131:Combined Modality Therapy; D004443:Echinococcosis / Q000150:complications / Q000473:pathology* / Q000628:therapy; D004446:Echinococcus / Q000302:isolation & purification; D005260:Female; D006801:Humans; D017116:Low Back Pain / Q000469:parasitology / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D012447:Sacrum / Q000469:parasitology* / Q000601:surgery; D013122:Spinal Diseases / Q000469:parasitology / Q000473:pathology* / Q000628:therapy; D013130:Spinal Stenosis / Q000469:parasitology / Q000473:pathology; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D014549:Urinary Incontinence / Q000469:parasitology / Q000473:pathology
chemical_list: D000977:Antiparasitic Agents; D015766:Albendazole