DATA FORM FOR CANCER STAGING - THYROID GLAND
Form # 785-1-020
| CLIN | PATH | DEFINITIONS | ||
| PRIMARY TUMOR (T) | ||||
| TX | Primary tumor cannot be assessed | |||
| T0 | No evidence of primary tumor | |||
| T1 | Tumor 1 cm or less in greatest dimension limited to the thyroid | |||
| T2 | Tumor more than 1 cm but not more than 4 cm | |||
| T3 | Tumor more than 4 cm in greatest dimension limited to the thyroid | |||
| T4 | Tumor of any size extending beyond the thyroid capsule | |||
| LYMPH NODE (N) | ||||
| NX | Regional lymph nodes cannot be assessed | |||
| N0 | No regional lymph node metastasis | |||
| N1 | Regional lymph node metastasis | |||
| N1a | Metastasis in ipsilateral cervical lymph nodes | |||
| N1b | Metastasis in bilateral, midline, or contralateral cervical or mediastinal lymph nodes | |||
| DISTANT METASTASIS (M) | ||||
| MX | Presence of distant metastasis cannot be assessed | |||
| M0 | No distant metastasis | |||
| M1 | Distant metastasis | |||
| CLIN | PATH | STAGE GROUPING | |||
| Separate stage groupings are recommended for papillary and follicular, medullary, and undifferentiated | |||||
| PAPILLARY OR
FOLLICULAR Under 45 years |
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| Stage I | Any T | Any N | M0 | ||
| Stage II | Any T | Any N | M1 | ||
| 45 years and over | |||||
| Stage I | T1 | N0 | M0 | ||
| Stage II | T2 | N0 | M0 | ||
| T3 | N0 | M0 | |||
| Stage III | T4 | N0 | M0 | ||
| Any T | N1 | M0 | |||
| Stage IV | Any T | N1 | M1 | ||
| MEDULLARY | |||||
| Stage I | T1 | N0 | M0 | ||
| Stage II | T2 | N0 | M0 | ||
| T3 | N0 | M0 | |||
| T4 | N0 | M0 | |||
| Stage III | Any T | N1 | M0 | ||
| Stage IV | Any T | Any N | M1 | ||
| UNDIFFERENTIATED All cases are Stage IV |
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| Stage IV | Any T | Any N | Any M | ||
THE FINAL STAGE GROUPING (CLINICAL & PATHOLOGICAL) IS THE RESPONSIBILITY OF THE ATTENDING PHYSICIAN.
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