Research Article
Stereotactic Radiosurgery for Renal Cancer Brain Metastasis: Prognostic Factors and the Role of Whole-Brain Radiation and Surgical Resection
Table 2
Treatment characteristics.
| | Characteristics | (%) |
| | Stereotactic radiosurgery | | | Median tumor volume (cm3) | 0.688 | | Range tumor volume (cm3) | 0.056–33.57 | | Median number of beams | 202 | | Median number of monitor units | 14741.26 | | Median dose per fraction (Gy) | 22 | | Range dose per fraction (Gy) | 5–22 | | Median total dose (Gy) | 22 | | Range total dose (Gy) | 12–30 | | Median number of fractions | 1 | | Range number of fractions | 1–5 | | Median coverage (%) | 96.39 | | Median isodose line (%) | 76 | | Range isodose line (%) | 58–89 | | Median conformality index | 1.3 | | Median homogeneity index | 1.32 | | Median minimum dose (Gy) | 2037.18 | | Median maximum dose (Gy) | 2822.02 | | Surgical resection | | | (patients) | 24 | | Gross total resection | 22 (91.7) | | Subtotal resection | 2 (8.3) | | Whole-brain radiation therapy (WBRT) | | | total | 12 (18.2) | | WBRT prior to SRS | 6 (9.1) | | WBRT after SRS | 6 (9.1) | | Median total dose (Gy) | 30 | | Dose range (Gy) | 20–37.5 | | Median dose for WBRT prior to SRS (Gy) | 30 | | Dose range for WBRT prior to SRS (Gy) | 20–30 | | Systemic therapy | | | (patients) | 56 (84.8) | | Standard | 25 (44.6) | | Experimental | 5 (9) | | Both | 26 (46.4) |
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