TNM Flashcards
No evidence of primary tumor
T0
Carcinoma in situ: intraepithelial tumor
without invasion of the lamina propria
Tis
Tumor invades lamina propria,
muscularis mucosae, or submucosa
T1
Tumor invades lamina propria or
muscularis mucosae
T1a
Tumor invades submucosa
T1b
Tumor invades muscularis propria
T2
Tumor penetrates subserosal connective
tissue without invasion of visceral
peritoneum or adjacent structures
T3
Tumor invades adjacent serosa (visceral
peritoneum) or adjacent structures
T4
Tumor invades serosa (visceral
peritoneum
T4a
Tumor invades serosa (visceral
peritoneum
T4b
Tumor invades adjacent structures
T4b
No regional lymph node metastasis
N0
Metastasis in 1-2 regional lymph nodes
N1
Metastasis in 3-6 regional lymph nodes
N2
Metastasis in seven or more regional lymph
nodes
N3