Stomach cancer staging: Difference between revisions
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====Primary tumor==== | ====Primary tumor==== | ||
*TX: Primary tumor cannot be assessed | *TX: [[Primary tumor]] cannot be assessed | ||
*T0: No evidence of primary tumor | *T0: No evidence of [[primary tumor]] | ||
*Tis: Carcinoma in situ: intraepithelial tumor without invasion of the lamina propria | *Tis: Carcinoma in situ: intraepithelial [[tumor]] without invasion of the [[lamina propria]] | ||
*T1: Tumor invades lamina propria, muscularis mucosae, or submucosa | *T1: [[Tumor]] invades [[lamina propria]], [[muscularis mucosae]], or [[submucosa]] | ||
*T1a: Tumor invades lamina propria or muscularis mucosae | *T1a: [Tumor]] invades [[lamina propria]] or [[muscularis mucosae]] | ||
*T1b: Tumor invades submucosa | *T1b: [[Tumor]] invades [[submucosa]] | ||
*T2: Tumor invades muscularis propria | *T2: [[Tumor]] invades [[muscularis propria]] | ||
*T3: Tumor penetrates subserosal connective tissue without invasion of visceral peritoneum or adjacent structures | *T3: [[Tumor]] penetrates subserosal [[connective tissue]] without invasion of [[visceral peritoneum]] or adjacent structures | ||
*T4: Tumor invades serosa (visceral peritoneum) or adjacent structures | *T4: [[Tumor]] invades [[serosa]] (visceral peritoneum) or adjacent structures | ||
*T4a: Tumor invades serosa (visceral peritoneum) | *T4a: [[Tumor]] invades [[serosa]] (visceral peritoneum) | ||
*T4b: Tumor invades adjacent structures | *T4b: [[Tumor]] invades adjacent structures | ||
====Regional Lymph Nodes==== | ====Regional Lymph Nodes==== | ||
*NX: Regional lymph node(s) cannot be assessed | *NX: Regional [[lymph node]](s) cannot be assessed | ||
*N0: No regional lymph node metastasis | *N0: No regional [[lymph node]] [[metastasis]] | ||
*N1: Metastases in 1–2 regional lymph nodes | *N1: Metastases in 1–2 regional [[lymph nodes]] | ||
*N2: Metastases in 3–6 regional lymph nodes | *N2: Metastases in 3–6 regional [[lymph nodes]] | ||
*N3: Metastases in ≥7 regional lymph nodes | *N3: Metastases in ≥7 regional [[lymph nodes]] | ||
*N3a: Metastases in 7–15 regional lymph nodes | *N3a: Metastases in 7–15 regional [[lymph nodes]] | ||
*N3b: Metastases in ≥16 regional lymph nodes | *N3b: Metastases in ≥16 regional [[lymph nodes]] | ||
====Distant Metastasis==== | ====Distant Metastasis==== | ||
*M0: No distant metastasis | *M0: No distant [[metastasis]] | ||
*M1: Distant metastasis | *M1: Distant [[metastasis]] | ||
===AJCC Stage Groupings=== | ===AJCC Stage Groupings=== | ||
Revision as of 19:43, 26 August 2015
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Parminder Dhingra, M.D. [2]
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Risk calculators and risk factors for Stomach cancer staging |
Overview
Staging
The American Joint Committee on Cancer has designated staging by TNM classification to define gastric cancer
Definitions of TNM
Primary tumor
- TX: Primary tumor cannot be assessed
- T0: No evidence of primary tumor
- Tis: Carcinoma in situ: intraepithelial tumor without invasion of the lamina propria
- T1: Tumor invades lamina propria, muscularis mucosae, or submucosa
- T1a: [Tumor]] invades lamina propria or muscularis mucosae
- T2: Tumor invades muscularis propria
- T3: Tumor penetrates subserosal connective tissue without invasion of visceral peritoneum or adjacent structures
- T4b: Tumor invades adjacent structures
Regional Lymph Nodes
- NX: Regional lymph node(s) cannot be assessed
- N0: No regional lymph node metastasis
- N1: Metastases in 1–2 regional lymph nodes
- N2: Metastases in 3–6 regional lymph nodes
- N3: Metastases in ≥7 regional lymph nodes
- N3a: Metastases in 7–15 regional lymph nodes
- N3b: Metastases in ≥16 regional lymph nodes
Distant Metastasis
- M0: No distant metastasis
- M1: Distant metastasis
AJCC Stage Groupings
Stage 0
- Tis, N0, M0
Stage IA
- T1, N0, M0
Stage IB
- T2, N0, M0
- T1, N1, M0
Stage IIA
- T3, N0, M0
- T2, N1, M0
- T1, N2, M0
Stage IIB
- T4a, N0, M0
- T3, N1, M0
- T2, N2, M0
- T1, N3, M0
Stage IIIA
- T4a, N1, M0
- T3, N2, M0
- T2, N3, M0
Stage IIIB
- T4b, N0, M0
- T4b, N1, M0
- T4a, N2, M0
- T3, N3, M0
Stage IIIC
- T4b, N2, M0
- T4b, N3, M0
- T4a, N3, M0
Stage IV
- Any T, Any N, M1 [1]