title: Primary spinal extradural hydatid cyst in a child: case report and review of the literature.
abstract: Spinal hydatid cyst is a rare but serious condition. An 8-year-old boy presented with back pain, progressive weakness and numbness in both legs. Magnetic resonance imaging (MRI) of the lumbar region showed a cystic lesion with regular contour located in extradural space. There was cerebrospinal fluid- (CSF-) like signal intensity on T1- and T2-weighted images. The lesion had excessively compressed the dural sac and caudal roots, and expanded to the L3 and L4 neural foramina. The case was explored with L2, L3, L4 laminectomy and the hydatid cyst was removed totally. The clinical presentation, diagnosis and surgical treatment of this rare case of spinal hydatid disease is discussed, and all available cases of primary extradural hydatid cyst reported in the literature are presented.
authors.affiliation: Department of Neurosurgery, Haydarpasa Numune Hospital, Usküdar, Istanbul, Turkey. selhank@turk.net
authors.forename: Selhan
authors.initials: S
authors.lastname: Karadereler
authors.forename: Metin
authors.initials: M
authors.lastname: Orakdögen
authors.forename: Kaya
authors.initials: K
authors.lastname: Kiliç
authors.forename: Cumhur
authors.initials: C
authors.lastname: Ozdogan
mesh_terms: D000818:Animals; D002420:Cauda Equina / Q000293:injuries* / Q000473:pathology / Q000503:physiopathology; D002648:Child; D004443:Echinococcosis / Q000473:pathology* / Q000503:physiopathology; D004446:Echinococcus / Q000472:pathogenicity*; D004824:Epidural Space / Q000469:parasitology / Q000473:pathology / Q000503:physiopathology; D020233:Gait Disorders, Neurologic / Q000469:parasitology / Q000473:pathology / Q000503:physiopathology; D006801:Humans; D007796:Laminectomy; D007866:Leg / Q000294:innervation / Q000503:physiopathology; D008159:Lumbar Vertebrae / Q000469:parasitology* / Q000473:pathology* / Q000503:physiopathology; D008279:Magnetic Resonance Imaging; D008297:Male; D010291:Paresis / Q000469:parasitology / Q000473:pathology / Q000503:physiopathology; D011128:Polyradiculopathy / Q000469:parasitology* / Q000473:pathology / Q000503:physiopathology; D011843:Radiculopathy / Q000469:parasitology / Q000473:pathology / Q000503:physiopathology