Intracranial extra-axial cavernous (HEM) angiomas: @entity5 or XXXX ?

@entity1 @entity455 @entity66 @entity2695 @entity5 @entity1653 @entity2477 @entity950 @entity1462
INTRODUCTION: Extra-axial @entity2477 or @entity2695 [(hem) @entity2695 ] are relatively rare lesions. They usually arise in relation to the dura mater intracranially or at the spinal level. Most of these lesions have been described in the middle cranial fossa at level of the cavernous sinus. Controversy still exists regarding the exact nature of these extra-axial @entity2477 : @entity5 versus @entity1462 similar to intra-axial cavernomas. It has been suggested that they could represent an adult form of the @entity2695 of @entity950 . Extra-axial cavernous (hem) @entity2695 often mimic @entity1653 and their clinical behavior and imaging appearance are quite different than those of intra-axial @entity2477 . SUBJECTS AND METHODS: Five @entity1 ranging in age from 24 to 63 years with a histologically proven dural @entity2477 were retrospectively included. The lesions were located at level of the cavernous sinus (4 cases) and falx. CT and MR scans were performed in all cases and angiography in three @entity1 . Four @entity1 underwent surgery and a biopsy was performed in one case. One lesion was embolized before biopsy. Histology was available in all @entity1 . RESULTS: In the operated @entity1 , the lesion was totally resected in 2 cases and partially in the other 2. No postsurgical complication was noted. Histology revealed a @entity1462 composed of large vascular channels lined by flat endothelium and separated by fibroconnective tissue stroma. The pathological diagnosis was @entity2477 . CONCLUSION: On the basis of the analysis of the literature and of our cases, intra-cranial extra-cerebral so-called cavernous (hem) @entity2695 present findings suggesting that they are vascular @entity66 , analogous to the intra-axial @entity2477 . A relationship with the @entity2695 of @entity950 seems unlikely. Correct terms for extra-cerebral cavernous (hem) @entity2695 are cavernoma, @entity2477 , or @entity455 of cavernous type . The term @entity2695 should be avoided and reserved for the common @entity5 of @entity950 .
