XXXX in the lumbar spine: a case report.

@entity1 @entity1183 @entity575 @entity2698 @entity5 @entity16 @entity3002 @entity425 @entity3
STUDY DESIGN: A case report of primary @entity2698 in the lumbar spine and a review of the literature are presented. OBJECTIVE: To present the result of pathologic diagnosis using immunohistochemical staining and the treatment of @entity2698 . SUMMARY OF BACKGROUND DATA: Spinal @entity2698 is a very rare soft tissue @entity5 with specific pathologic features and a clinical course featuring high rates of recurrence and @entity3 . METHODS: A 39-year-old @entity1 reported @entity1183 in both legs. Neither @entity3002 nor @entity425 was present in her lower extremities. Magnetic resonance imaging showed a @entity5 dorsal to the thecal sac at L1-L2. After L1 and L2 laminectomy, the @entity5 with its dural base was resected en bloc. RESULTS: The @entity1 's clinical and @entity16 disappeared after surgery. Microscopic examination showed oval- or spindle-shaped cells with slightly acidic cytoplasm and oval nuclei. @entity575 staining emphasized fibers around @entity5 cells. The test results for the @entity5 cells were positive for vimentin staining, but negative for alpha-TM staining using thrombomodulin, a marker for endothelial cells. On the basis of these pathologic findings, the @entity5 was diagnosed as a @entity2698 , a type of @entity5 composed of mesenchymal hemangiopericytes. Neither recurrence nor @entity3 of the @entity5 was found during the 2-year follow-up period after surgery. CONCLUSIONS: Soft tissue @entity2698 is a well-recognized entity considered to be an aggressive @entity5 with a high rate of recurrence and a propensity to metastasize. Immunohistochemical investigation was essential for the diagnosis of this @entity5 . Although @entity2698 very rarely occurs in the spine, surgeons treating @entity1 with this @entity5 should be aware of its metastatic potential.
