"T0: no evidence of primary tumour"
"T3: invasion into adjacent skeletal muscle, recurrent laryngeal nerve, trachea, oesophagus, thymus or direct invasion into adjacent lymph node(s)"
"T3: invasion into adjacent skeletal muscle, recurrent laryngeal nerve, trachea, oesophagus, thymus or direct invasion into adjacent lymph node(s)"
"N1a: level VI (pretracheal, paratracheal and prelaryngeal/Delphian lymph nodes) or upper/superior mediastinal lymph node(s)"
"N1b: unilateral, bilateral or contralateral cervical (Levels I, II, III, IV or V) or retropharyngeal lymph node(s)"
"Parathyroid carcinoma staging refers to the TNM staging of parathyroid carcinoma. These are extremely rare tumours that arise in parathyroid glands and often present with severe hyperparathyroidism. Imaging may include Tc-99m-sestamibi."
"The following article reflects the 9th version of the classification by the Union for International Cancer Control (UICC) published in 2025, at which point this staging system was newly introduced 1. It has not yet been included in the American Joint Committee on Cancer (AJCC) system."
"The following article reflects the 9th version of the classification by the Union for International Cancer Control (UICC) published in 2025, at which point this staging system was newly introduced 1. It has not yet been included in the American Joint Committee on Cancer (AJCC) system."
"TX: primary tumour cannot be assessed"
"NX: regional lymph nodes cannot be assessed"
"The terms pM0 and MX are not valid TNM categories. The following categories may be used 1:"
"Primary tumour (T)"
"Regional lymph node (N)"
"Distant metastases (M)"
Expected headings
"Primary tumour (T)"
"Regional lymph node (N)"
"Distant metastases (M)"
"Stage groups"
"T3: invasion into adjacent skeletal muscle, recurrent laryngeal nerve, trachea, oesophagus, thymus or direct invasion into adjacent lymph node(s)"
"N1a: level VI (pretracheal, paratracheal and prelaryngeal/Delphian lymph nodes) or upper/superior mediastinal lymph node(s)"
"N1b: unilateral, bilateral or contralateral cervical (Levels I, II, III, IV or V) or retropharyngeal lymph node(s)"
"N1b: unilateral, bilateral or contralateral cervical (Levels I, II, III, IV or V) or retropharyngeal lymph node(s)"
"There is no data to determine stage groups 1,2."