Table 8.
Previous studies demonstrating surgical results for the intramedullary tumors
| Study | Intramedullary tumor cases | Complete resection | Postoperative deterioration | Prognostic factors | |
|---|---|---|---|---|---|
| Cooper and Epstein, [12] 1985 | 29 Cases | 72% | 28% | Satisfactory neurological status before surgery | |
| -14 Ependymomas | Histological type | ||||
| -11 Astrocytomas | Complete removal | ||||
| Cristante and Herrmann, [17] 1994 | 69 Cases | 55.1% | 29.4%–31.5% | Preoperative neurologic deficit | |
| -34 Ependymomas | |||||
| -28 Astrocytomas | |||||
| Constantini et al., [10] 2000 | 164 Cases | 76.8% | 23.% | Histological type | |
| -19 Ependymomas | Preoperative functions | ||||
| -76 Astrocytomas | Patients with shunts | ||||
| Sandalcioglu et al., [13] 2005 | 78 Cases | 83.3% | 34.6% | Preoperative neurological condition | |
| -32 Ependymomas | Histological differentiation | ||||
| -15 Astrocytomas | |||||
| Raco et al., [11] 2005 | 202 Cases | 57.8% | 38.2% | Functional status at surgery | |
| -86 Astrocytomas | Histological type | ||||
| -68 Ependymomas | Extent of surgical removal | ||||
| Woodworth et al., [14] 2007 | 78 Cases | Not addressed | 19.2% | Serum glucose levels | |
| -27 Ependymomas | Preoperative ambulatory status | ||||
| -23 Astrocytomas | Preoperative radiation therapy | ||||
| Matsuyama et al., [15] 2009 | 106 Cases | 56.0% | 31.5% | Good preoperative neurological status | |
| -46 Ependymomas | Total resections | ||||
| -12 Astrocytomas | |||||
| -16 Hemangioblastomas | |||||
| -17 Cavernous malformations | |||||
| Klekamp, [19] 2013 | 250 Cases | 61.2% | 19.5% | Surgical experience | |
| -99 Ependymomas | Preoperative status | ||||
| -76 Astrocytomas | Thoracic tumors | ||||
| -28 Hemangioblastomas | Tumor hemorrhage | ||||
| -13 Cavernous malformations | Recurrent tumors | ||||
| Kumar and Banerjee, [9] 2014 | 43 Cases | 69.8% | 23.3% | Preoperative neurological grade | |
| -21 Ependymomas | Gross tumor resections | ||||
| -12 Astrocytomas | High histological grades | ||||
| -5 Hemangioblastomas | |||||
| Boström et al., [16] 2014 | 70 Cases | 64.3% | 14.3% | Degree of resection | |
| -39 Ependymomas | Preoperative status | ||||
| -11 Astrocytomas | |||||
| -5 Hemangioblastomas | |||||
| -3 Cavernous Malformations | |||||
| Hongo et al., [18] 2019 | 49 Cases | 49.0% | Not addressed | Histological type | |
| -32 Ependymomas | Gross total resection for ependymoma | ||||
| -17 Astrocytomas | |||||