Question
A patient with cheek cancer has a tumour of 2.5 cm located close to and involving the lower alveolus. A single mobile ipsilateral lymph node measuring 6 cm is palpable. The TNM stage is:
| A. |
T1N1M0
|
| B. |
T2N2M0
|
| C. |
T2N1M0
|
| D. |
T4N2M0
|
Show Answer
|
Correct Answer � D
Explanation
|
|
Answer- D
T — Primary tumour
| TX |
Primary tumour cannot be assessed |
| T0 |
No evidence of primary tumour |
| Tis |
Carcinoma in situ |
| T1 |
Tumour 2 cm or less in greatest dimension |
| T2 |
Tumour more than 2 cm but not more than 4 cm in greatest dimension |
| T3 |
Tumour more than 4 cm in greatest dimension |
| T4a (lip) |
Tumour invades through cortical bone, inferior alveolar nerve, floor of mouth, or skin (chin or nose) |
| T4a (oral cavity) |
Tumour invades through cortical bone, into deep/extrinsic muscle of tongue (genioglossus, hyoglossus, palatoglossus, and styloglossus), maxillary sinus, or skin of the face |
| T4b |
Tumour invades masticator space, pterygoid plates, or skull base; or encases internal carotid artery |
N – Regional Lymph Node
| NX |
Regional lymph nodes cannot be assessed |
| N0 |
No regional lymph node metastasis |
| N1 |
Metastasis in a single ipsilateral lymph node, 3 cm or less in greatest dimension |
| N2 |
Metastasis as specified in N2a, 2b, 2c below |
| N2a |
Metastasis in a single ipsilateral lymph node, more than 3 cm but not more than 6 cm in greatest dimension |
| N2b |
Metastasis in multiple ipsilateral lymph nodes, none more than 6 cm in greatest dimension |
| N2c |
Metastasis in bilateral or contralateral lymph nodes, none more than 6 cm in greatest dimension |
| N3 |
Metastasis in a lymph node more than 6 cm in greatest dimension |
M – Distant metastasis
| M0 |
No distant metastasis |
| M1 |
Distant metastasis |
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