From: Unusual sized cecal mass presenting without obstruction: a case report
Primary Tumor (T) |
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Tis: Carcinoma in situ; intraepithelial (within glandular basement membrane) or invasion of lamina propria (intramucosal) |
T1: Tumor invades submucosa |
T2: Tumor invades muscularis propria |
T3: Tumor invades through the muscularis propria into the subserosa, or into nonperiotonealized pericolic or perirectal tissues |
T4: Tumor directly invades other organs or structures, and/or perforates visceral peritoneum |
Regional Lymph Node (N) |
NX: Regional nodes cannot be assessed |
N0: No regional node metastases |
N1: Metastasis in 1 to 3 regional lymph nodes |
N2: Metastasis in 4 or more regional lymph nodes |
Distant Metastasis (M) |
MX: Distant metastasis cannot be assessed |
M0: No distant metastasis |
M1: Distant metastasis |
Stage Groupings |
Stage 0: Tis, N0, M0 |
Stage I: T1-2, N0, M0 |
Stage IIA: T3, N0, M0 |
Stage IIB: T4, N0, M0 |
Stage IIIA: T1-2, N1, M0 |
Stage IIIB: T3-4, N1, M0 |
Stage IIIC: Any T, N2, M0 |
Stage IV: Any T, Any N, M1 |