Primary tumor (T) | |
T category | T criteria |
TX | Primary tumor cannot be assessed |
T0 | No evidence of primary tumor |
Tis | Atypical parathyroid neoplasm (neoplasm of uncertain malignant potential)* |
T1 | Localized to the parathyroid gland with extension limited to soft tissue |
T2 | Direct invasion into the thyroid gland |
T3 | Direct invasion into recurrent laryngeal nerve, esophagus, trachea, skeletal muscle, adjacent lymph nodes, or thymus |
T4 | Direct invasion into major blood vessel or spine |
* Defined as tumors that are histologically or clinically worrisome but do not fulfill the more robust criteria (ie, invasion, metastasis) for carcinoma. They generally include tumors that have two or more concerning features, such as fibrous bands, mitotic figures, necrosis, trabecular growth, or adherence to surrounding tissues intraoperatively. Atypical parathyroid neoplasms usually have a smaller dimension, weight, and volume than carcinomas and are less likely to have coagulative tumor necrosis. | |
Regional lymph nodes (N) | |
N category | N criteria |
NX | Regional lymph nodes cannot be assessed |
N0 | No regional lymph node metastasis |
N1 | Regional lymph node metastasis |
N1a | Metastasis to level VI (pretracheal, paratracheal, and prelaryngeal/Delphian lymph nodes) or superior mediastinal lymph nodes (level VII) |
N1b | Metastasis to unilateral, bilateral, or contralateral cervical (levels I, II, III, IV, or V) or retropharyngeal nodes |
Distant metastasis (M) | |
M category | M criteria |
M0 | No distant metastasis |
M1 | Distant metastasis |
Prognostic stage groups | |
There are not enough data to propose anatomic stage and prognostic groups for parathyroid carcinoma. |
آیا می خواهید مدیلیب را به صفحه اصلی خود اضافه کنید؟