TRUTH standard lesion diagnoses
| Specific Diagnosis | N = 444 (%) |
|---|---|
| Malignant tumor diagnoses (n = 293) (66%) | |
| Anaplastic astrocytoma (grade III) | 12 (2.7) |
| Glioblastoma multiforme (grade IV) | 55 (12.4) |
| Anaplastic oligodendroglioma (grade III) | 4 (0.9) |
| Anaplastic oligoastrocytoma (grade III) | 8 (1.8) |
| Ependymoastrocytoma | 2 (0.5) |
| Malignant lymphoma | 1 (0.2) |
| Metastatic tumors | 211 (47.5) |
| Benign tumor diagnoses (n = 80) (18%) | |
| Astrocytoma (grade II) | 2 (0.5) |
| Pilocytic astrocytoma (noninvasive, grade I) | 1 (0.2) |
| Oligodendroglioma (grade II) | 1 (0.2) |
| Ependymoma (grade II) | 1 (0.2) |
| Mixed oligoastrocytoma (grade II) | 1 (0.2) |
| Pineocytoma (grade I) | 1 (0.2) |
| Pituitary adenoma | 5 (1.1) |
| Craniopharyngioma (grade I) | 1 (0.2) |
| Meningioma (grade I) | 38 (8.6) |
| Atypical meningioma (grade II) | 9 (2.0) |
| Benign mesenchymal tumor | 1 (0.2) |
| Melanocytoma | 1 (0.2) |
| Hemangioblastoma (grade I) | 1 (0.2) |
| Schwannoma (neurinoma, neurilemmoma) (grade I) | 16 (3.6) |
| Cysts and tumorlike lesions (epidermoid) | 1 (0.2) |
| Nontumor diagnoses (n = 71) (16%) | |
| White matter disease | 1 (0.2) |
| Vascular lesion | 10 (2.3) |
| Infective/inflammatory disease | 2 (0.5) |
| Infarct | 1 (0.2) |
| Hemorrhage | 1 (0.2) |
| Postoperative/posttreatment changes | 56 (12.6) |