DATA FORM FOR CANCER STAGING - BRAIN
Form # 785-1-054
| CLIN | PATH | DEFINITIONS | |
| PRIMARY TUMOR (T) | |||
| TX | Primary tumor cannot be assessed | ||
| T0 | No evidence of primary tumor | ||
| SUPRATENTORIAL TUMOR | |||
| T1 | Tumor 5 cm or less in greatest dimension; limited to one side | ||
| T2 | Tumor more than 5 cm in greatest dimension; limited to one side | ||
| T3 | Tumor invades or encroaches upon the ventricular system | ||
| T4 | Tumor crosses the midline, invades the opposite hemisphere, or extends infratentorially | ||
| INFRATENTORIAL TUMOR | |||
| T1 | Tumor 3 cm or less in greatest dimension; limited to one side | ||
| T2 | Tumor more than 3 cm in greatest dimension; limited to one side | ||
| T3 | Tumor invades or encroaches upon the ventricular system | ||
| T4 | Tumor crosses the midline, invades the opposite hemisphere, or invades supratentorially | ||
| LYMPH NODE (N) | |||
| This category does not apply to this site | |||
| DISTANT METASTASIS (M) | |||
| MX | Presence of distant metastasis cannot be assessed | ||
| M0 | No distant metastasis | ||
| M1 | Distant metastasis | ||
| HISTOPATHOLOGIC GRADE (G) | |||
| GX | Grade cannot be assessed | ||
| G1 | Well differentiated | ||
| G2 | Moderately differentiated | ||
| G3 | Poorly differentiated | ||
| G4 | Undifferentiated | ||
| CLIN | PATH | STAGE GROUPING | |||
| IA | G1 | T1 | M0 | ||
| IB | G1 | T2 | M0 | ||
| G1 | T3 | M0 | |||
| IIA | G2 | T1 | M0 | ||
| IIB | G2 | T2 | M0 | ||
| G2 | T3 | M0 | |||
| IIIA | G3 | T1 | M0 | ||
| IIIB | G3 | T2 | M0 | ||
| G3 | T3 | M0 | |||
| IV | G1 | T4 | M0 | ||
| G2 | T4 | M0 | |||
| G3 | T4 | M0 | |||
| G4 | Any T | M0 | |||
| Any G | Any T | M1 | |||
THE FINAL STAGE GROUPING (CLINICAL & PATHOLOGICAL) IS THE RESPONSIBILITY OF THE ATTENDING PHYSICIAN.
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