Gastric cancer (TNM staging)
Updates to Article Attributes
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was changed:
Gastric cancer staging is routinely performed using the TNM staging system. This article is based on the 7th edition of the TNM classification of malignant tumours.
TNM staging (7th edition)
T
-
T1
- T1a: tumour invades the lamina propria and or muscularis mucosae
- T1b: tumour invades submucosa
- T2: tumour invades muscularis propria
- T3: tumour penetrates the serosa without invasion of the adjacent structures
-
T4
- T4a: tumour invades serosa (visceral peritoneum)
- T4b: tumour invades adjacent structures
N
- N0: no nodal involvement
- N1: metastases in 1 to 2 regional lymph nodes
- N2: metastases in 3 to 6 regional lymph nodes
-
N3
- N3a: metastases in 7 to 15 regional lymph nodes
- N3b: metastases in more than 15 regional lymph nodes
M
- M0: no distant metastases
- M1: distant metastases
TNM staging (8th edition)
T
- Tx: primary tumor cannot be assessed
- T0: no evidence of primary tumor
- Tis: carcinoma in situ: intraepithelial tumor without invasion of the lamina propria, high grade dysplasia
-
T1
- T1a: tumour invades the lamina propria and or muscularis mucosae
- T1b: tumour invades submucosa
- T2: tumour invades muscularis propria
- T3: Tumor penetrates the subserosal connective tissue without invasion of the visceral peritoneum or adjacent structures
-
T4
- T4a: tumour invades serosa (visceral peritoneum)
- T4b: tumour invades adjacent structures
N
- Nx: regional lymph node (s) cannot be assessed
- N0: no regional nodal involvement
- N1: metastases in 1 to 2 regional lymph nodes
- N2: metastases in 3 to 6 regional lymph nodes
-
N3
- N3a: metastases in 7 to 15 regional lymph nodes
- N3b: metastases in more than 15 regional lymph nodes
M
- M0: no distant metastases
- M1: distant metastases
***Reference for AJCC 8th to be added***
-<p><strong>Gastric cancer staging</strong> is routinely performed using the <a href="/articles/tnm-staging-system">TNM staging system</a>. This article is based on the 7th edition of the TNM classification of malignant tumours.</p><h4>TNM staging (7<sup>th </sup>edition)</h4><h5><strong>T</strong></h5><ul>- +<p><strong>Gastric cancer staging</strong> is routinely performed using the <a href="/articles/tnm-staging-system-2">TNM staging system</a>. This article is based on the 7th edition of the TNM classification of malignant tumours.</p><h4>TNM staging (7<sup>th </sup>edition)</h4><h5><strong>T</strong></h5><ul>
-</ul>- +</ul><p> </p><p> </p><p><strong>TNM staging (8th edition)</strong></p><p>T</p><ul>
- +<li>Tx: primary tumor cannot be assessed</li>
- +<li>T0: no evidence of primary tumor</li>
- +<li>Tis: carcinoma in situ: intraepithelial tumor without invasion of the lamina propria, high grade dysplasia</li>
- +<li>T1<ul>
- +<li>T1a: tumour invades the lamina propria and or muscularis mucosae </li>
- +<li>T1b: tumour invades submucosa </li>
- +</ul>
- +</li>
- +<li>T2: tumour invades muscularis propria </li>
- +<li>T3: Tumor penetrates the subserosal connective tissue without invasion of the visceral peritoneum or adjacent structures</li>
- +<li>T4<ul>
- +<li>T4a: tumour invades serosa (visceral peritoneum)</li>
- +<li>T4b: tumour invades adjacent structures</li>
- +</ul>
- +</li>
- +</ul><p> N</p><ul>
- +<li>Nx: regional lymph node (s) cannot be assessed</li>
- +<li>N0: no regional nodal involvement</li>
- +<li>N1: metastases in 1 to 2 regional lymph nodes</li>
- +<li>N2: metastases in 3 to 6 regional lymph nodes</li>
- +<li>N3<ul>
- +<li>N3a: metastases in 7 to 15 regional lymph nodes</li>
- +<li>N3b: metastases in more than 15 regional lymph nodes</li>
- +</ul>
- +</li>
- +</ul><p>M</p><ul>
- +<li>M0: no distant metastases</li>
- +<li>M1: distant metastases</li>
- +</ul><p>***Reference for AJCC 8th to be added***</p>
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