Histological Investigation of Resected Dura Mater Attached to Spinal Meningioma

Long-term recurrence rates after the removal of spinal meningiomas in relation to Simpson grades

“…analyzed resected duras after Simpson grade I spinal meningioma removals and found that dural invasion was observed in 19/25 (76 %) and 15/43 (35 %) cases, respectively [5,25]. Consequently, complete removal of the attached dura may be the most effective surgical method.…”

“…Tumor recurrence according to surgical technique Yamamuro et al [25] and Nakamura et al [5]. analyzed resected duras after Simpson grade I spinal meningioma removals and found that dural invasion was observed in 19/25 (76 %) and 15/43 (35 %) cases, respectively [5,25].…”

“…The tumors were located on the cervical spine in eight patients (ventral, 4; lateral, 3; dorsal, 1) and on the thoracic spine in 12 (ventral, 5; lateral, 6; dorsal, 1) ( Table 3). The largest diameter among the tumors was 15.9 ± 5.0 mm (range [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25], and the dural tail sign was present in 15/20 patients.…”

Minimally invasive surgery for benign intradural extramedullary spinal meningiomas: experience of a single institution in a cohort of elderly patients and review of the literature

“…Resection of the dura mater involved (Simpson grade I), coagulation of the dural attachment (Simpson grade II), and peeling off of the inner dural layer from the outer one are three common procedures described in the literature 43,44,63. Grade I Simpson resection is the most radical treatment option for spinal meningioma, although some reports have not confirmed the need for complete resection of the dura involved, and the long-term results of this technique have yet to be validated 1,4,6,15,18,50.…”

“…A controversial point in the literature concerns the best management of the dural attachment that is commonly resected or coagulated 43. We have used another technique in our patients, first described by Saito et al in 2001, involving separation of the dura into an outer and inner layer, with the inner layer removed together with the tumor and the outer layer used for primary dural closure 44.…”