[Spinal neurenteric cyst revealed by a XXXX ].

@entity1 @entity1183 @entity1494 @entity75 @entity4681 @entity601 @entity74 @entity158 @entity1971 @entity130
BACKGROUND: Intraspinal @entity601 are exceptional formations which develop from incomplete @entity601 and the endodermis during the third week of gestation. Symptoms generally appear before the age of 40 years and are associated with spinal malformations. Most @entity601 lie in an extra-spinal position in the lower cervical and upper dorsal spine. We report a case involving the cauda equina with no associated spinal lesion. CASE REPORT: A 63-year-old @entity1 was admitted for low back @entity158 and right L3 radiculalgia triggered by exertion. @entity1494 had developed over the preceding year. Physical examination found a @entity4681 with @entity1183 of the right para-anal area, an atonic anal sphincter and a globular bladder. Plain films showed a widened interpedicular space between L1 and L2 interpreted as the consequence of an expansive @entity75 . Saccoradiculography led to the diagnosis of an intradural lesion involving L1 and L2. At magnetic resonance imaging, the lesion's signal intensity was similar to cerebrospinal fluid on T1 and T2 sequences, deforming the cauda equina and displacing the nerve roots. Surgical resection of the cyst was incomplete due to adherences to several roots and was followed by persistent radiculalgia and @entity74 . DISCUSSION: This case demonstrates an exceptional cause of @entity1971 . Fissuration or rupture of the cyst might explain symptom exacerbation following @entity130 . Magnetic resonance imagining can confirm the cystic nature of the intradural lesion and help guide surgery. Resection is often incomplete with the risk of long-term recurrence.
