Oral cavity carcinoma (staging)
Updates to Article Attributes
Body
was changed:
Staging of oral cavity squamous cell carcinoma uses the TNM staging system.
Primary tumour staging (T)
-
Tx
- tumour: primary tumor cannot be assessed -
T0
-: there is no evidence of primarytumourtumor -
Tis
-: carcinoma is in situ - T1: tumor is 2 cm or less in greatest dimension
-
T2: tumor is more than 2 cm
and lessbut not greater than 4 cm ingreatest dimension - T3: tumor is more than 4 cm in greatest dimension
-
T4 (lip): tumor invades through cortical bone, inferior alveolarnerve, floor of mouth, or skin of face, i.e. chin or nose
-
T4a (oral)
- tumour: tumor invades adjacent structures(mandiblemaxillaskin,into deep/extrinsic muscles ofthetongue,maxillary sinus, skin of face) - T4b: tumor invades masticator space, pterygoid plates, orskull base and/or encases the internal carotid artery
-
T4a (oral)
Superficial erosion alone of bone/tooth socket by gingival primaryis not sufficient to classify as T4.
Nodal status (N)
Nodal staging is the same for SCCs of the oral cavity, oropharynx, hypopharynx and larynx.
- Nx - nodes cannot be assessed
- N0 - no regional nodal metastases
- N1 - single ipsilateral node, ≤ 3cm
-
N2
- N2a - single ipsilateral node, 3-6 cm
- N2b - multiple ipsilateral nodes, < 6 cm
-
N2c
- bilateral nodal metastases OR
- contralateral nodal metastases < 6 cm
- N3 : any nodal metastasis > 6 cm
Metastases (M)
- M0 - no metastases
- M1 - distant metastases present
See also
-<strong>Tx</strong> - tumour cannot be assessed</li>- +<strong>Tx</strong>: primary tumor cannot be assessed</li>
-<strong>T0</strong> - no evidence of primary tumour</li>- +<strong>T0</strong>: there is no evidence of primary tumor</li>
-<strong>Tis</strong> - carcinoma <em>in situ</em>-</li>- +<strong>Tis</strong>: carcinoma is in situ</li>
- +<li>
- +<strong>T1</strong>: tumor is 2 cm or less in greatest dimension</li>
- +<li>
- +<strong>T2</strong>: tumor is more than 2 cm but not greater than 4 cm in<br>greatest dimension</li>
-<strong>T1 </strong>- tumour 2 cm or less in greatest dimension</li>- +<strong>T3</strong>: tumor is more than 4 cm in greatest dimension</li>
-<strong>T2 </strong>- tumour greater than 2 cm and less than 4 cm in greatest dimension</li>- +<strong>T4</strong> (lip): tumor invades through cortical bone, inferior alveolar<br>nerve, floor of mouth, or skin of face, i.e. chin or nose<ul>
-<strong>T3 </strong>- tumour greater than 4 cm in greatest dimension</li>- +<strong>T4a (oral)</strong>: tumor invades adjacent structures (e.g., through<br>cavity) cortical bone, into deep/<a href="/articles/extrinsic-muscles-of-the-tongue">extrinsic muscles of tongue</a>,<br>maxillary sinus, skin of face)</li>
-<strong>T4 </strong>- tumour invades adjacent structures (<a href="/articles/mandible">mandible</a>, <a href="/articles/maxilla">maxilla</a>, skin, <a href="/articles/extrinsic-muscles-of-the-tongue">extrinsic muscles of the tongue</a>)</li>-</ul><h6>Nodal status (N)</h6><p>Nodal staging is the same for SCCs of the <a title="Oral cavity" href="/articles/oral-cavity-1">oral cavity</a>, <a title="Oropharynx" href="/articles/oropharynx">oropharynx</a>, <a title="Hypopharynx" href="/articles/hypopharynx">hypopharynx</a> and <a title="Larynx" href="/articles/larynx">larynx</a>.</p><ul>- +<strong>T4b</strong>: tumor invades masticator space, pterygoid plates, or<br>skull base and/or encases the internal carotid artery</li>
- +</ul>
- +</li>
- +</ul><p>Superficial erosion alone of bone/tooth socket by gingival primary<br>is not sufficient to classify as T4.</p><h6>Nodal status (N)</h6><p>Nodal staging is the same for SCCs of the <a href="/articles/oral-cavity-1">oral cavity</a>, <a href="/articles/oropharynx">oropharynx</a>, <a href="/articles/hypopharynx">hypopharynx</a> and <a href="/articles/larynx">larynx</a>.</p><ul>
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