Table 2.
Top diagnosis for SRS. A) The five most common associated indications for primary radiosurgery were for secondary brain and spinal cord metastases (36.7%; 3,079), trigeminal neuralgia (10.7%; 899), meningiomas (9.6%; 808), cranial nerve schwannomas (6.7%; 565), and cerebrovascular anomalies (5.6%; 465). B) Radiosurgery was most commonly used as an adjuvant treatment in resections of secondary brain and spinal cord metastases (19.5%; 638), primary neoplasms of frontal lobe (8.3%, 272), meningiomas (7.5%; 246), primary neoplasms of temporal lobe involving hippocampus/uncus (6.4%; 210), and benign pituitary neoplasms (5.1%; 167).
A)
| Top Ten Associated Diagnosis for Primary SRS | n | % | |
| 1 | Metastasis (198.3) | 3079 | 36.74 |
| 2 | Trigeminal neuralgia (350.1) | 899 | 10.73 |
| 3 | Meningioma (225.2) | 808 | 9.64 |
| 4 | Schwannoma (225.1) | 565 | 6.74 |
| 5 | AVM (747.81) | 465 | 5.55 |
| 6 | Primary malignant CNS tumor, frontal lobe (191.1) | 261 | 3.11 |
| 7 | Primary malignant CNS tumor, corpus callosum (191.8) | 228 | 2.72 |
| 8 | Benign pituitary lesions (227.3) | 177 | 2.11 |
| 9 | Primary malignant CNS tumor, temporal lobe (191.2) | 169 | 2.02 |
| 10 | Primary malignant CNS tumor, parietal lobe (191.3) | 157 | 1.87 |
| B) | |||
| Top Ten Primary Diagnosis for Secondary SRS | n | % | |
| 1 | Metastasis (198.3) | 638 | 19.45 |
| 2 | Primary malignant CNS tumor, frontal lobe (191.1) | 272 | 8.29 |
| 3 | Meningioma (225.2) | 246 | 7.5 |
| 4 | Primary malignant CNS tumor, temporal lobe (191.2) | 210 | 6.4 |
| 5 | Benign pituitary lesions (227.3) | 167 | 5.09 |
| 6 | Primary malignant CNS tumor, parietal lobe (191.3) | 153 | 4.66 |
| 7 | Parkinson’s disease (332.0) | 81 | 2.47 |
| 8 | Primary malignant CNS tumor (NOS) (191.9) | 69 | 2.1 |
| 9 | Primary malignant CNS tumor, corpus callosum (191.8) | 56 | 1.71 |
| 10 | Benign primary CNS neoplasm (225.0) | 53 | 1.62 |
SRS – stereotactic radiosurgery
AVM – arteriovenous malformation
CNS – central nervous system
NOS – not otherwise specified