MRI in primary intraspinal extradural hydatid disease: case report

Berk, Çağlar; Çıftçı, Ercüment; Erdoğan, Ahmet

doi:10.1007/s002340050608

Cited by 51 publications

(47 citation statements)

References 10 publications

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“…6,16,27,30 Berk et al 30 reviewed MRI characteristics of the lesions and concluded that they had a unique appearance: A sausage-like shape with two dome shaped ends, thin and regular walls and no septation or debris in the lumen. The lesions are occasionally spherical.…”

Section: Diagnosismentioning

confidence: 99%

“…Signal characteristics of the cyst content are usually similar to that of CSF. 27,30,31 On T1W images the cyst wall appears iso-or slightly more hypo-intense than the cyst content and enhances slightly after contrast injection. T2W images demonstrate a low intensity rim which correlates to the pathological ®ndings of reactive ®brosis and degeneration surrounding the parasitic membrane.…”

Section: Diagnosismentioning

confidence: 99%

“…It has also been reported that viability of the cysts could be determined by their MRI characteristics. 30 Namely, on T2W images cysts tend to lose their hyperintensity and the walls tend to lose their hypointense signal upon inactivation. 13,30,31 The authors noted that the dierential diagnosis included dorsal arachnoid diverticula, Figure 2 (A, B).…”

Section: Diagnosismentioning

confidence: 99%

“…30 Namely, on T2W images cysts tend to lose their hyperintensity and the walls tend to lose their hypointense signal upon inactivation. 13,30,31 The authors noted that the dierential diagnosis included dorsal arachnoid diverticula, Figure 2 (A, B). A 21-year-old female patient presented to our clinic with motor weakness and presthesias in the lower extremities and a dermal ®stula in the back with purulent discharge The CT and MRI provide complementary data both in diagnosis and follow up of patients with spinal echinococcosis.…”

Section: Diagnosismentioning

confidence: 99%

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Spinal hydatid disease

2002

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Section: Diagnosismentioning

confidence: 99%

Section: Diagnosismentioning

confidence: 99%

Section: Diagnosismentioning

confidence: 99%

Section: Diagnosismentioning

confidence: 99%

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Spinal hydatid disease

2002

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“…1 A, Fig. 2A,B Postoperative MR image showing that the hydatid cyst was totally removed 12 cases of primary extradural hydatid cysts, including ours [2,3,4,5,7,10,14,15,16,18]. In reports originating from a period prior to computed tomography (CT) and MRI, the possibility of the existence of a single extradural hydatid cyst or of soft tissue involvement without bony origin was viewed with scepticism [13,19].…”

Section: Case Reportmentioning

confidence: 99%

Primary spinal extradural hydatid cyst in a child: case report and review of the literature

Karadereler

Orakdogen

Kılıç

et al. 2002

European Spine Journal

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IntroductionHydatid disease is more common in young people who have had contact with dogs, wolves or cats [9,12]. In a large percentage of cases, echinococcus granulosus usually involves the liver and lungs.Hydatid disease of the bone is found in 1% of all cases, with the spine being involved in 45% of bone infestations. Disease usually spreads to the spine by direct extension from pulmonary, abdominal or pelvic infestation, and most commonly affects the dorsal region [2,9,11,12,20]. Primary spinal extradural hydatid cyst is extremely rare.A rare case of primary lumbar extradural hydatid cyst, which causes cauda equina compression, is reported and clinical presentation, diagnosis and surgical treatment are discussed. Case reportAn 8-year-old boy from Eastern Anatolia, who had not suffered from any other disease till then, presented with back pain, progressive weakness, numbness in both legs and difficulty in walking; all symptoms having appeared 7 months earlier.Physical examination showed no abnormality. Neurological examination revealed perianal hypoesthesia and paraparesis prominent on the right and distal muscle groups. There was loss of patella and Achilles reflexes, as well as urinary and anal incontinence.Abdominal ultrasonography scans and magnetic resonance (MR) images of the cranium and cervical region were normal. MRI of the lumbar region showed an intracanalicular cystic lesion with a regular contour and extradural location, with dimensions of 4.9 cm craniocaudally and 2.5 cm axially. 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 had expanded to the L3 and L4 neural foramina without any bone involvement (Fig. 1). Initially, the lesion was considered to be a hydatid cyst, but serological tests (specific ELISA/Western blot) proved negative.The case was explored with L2, L3, L4 laminectomy. The lesion was removed totally, with a fibrous pseudocapsule that tightly adhered to the dural sac and bone, and the cavity was irrigated with hypertonic saline. Histopathological examination revealed a hydatid cyst.Albendazole treatment was applied in the early postoperative stage. Paraparesis was improved almost completely in later controls extending over 3 years, and postoperative MRI scans showed that the hydatid cyst had been totally removed (Fig. 2). Anal incontinence was improved, while urinary incontinence persisted, but in a decreasing manner.Abstract Spinal hydatid cyst is a rare but serious condition. An 8-yearold 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 r...

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