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 | Tumor invades lamina propria, muscularis mucosa or submucosa |
T1a | Tumor invades lamina propria or muscularis mucosa |
T1b | Tumor invades the submucosa |
T2 | Tumor invades the muscularis propria |
T3 | Tumor penetrates the subserosal connective tissue |
T4 | Tumor invades the serosa or adjacent structures |
T4a | Tumor invades the serosa |
T4b | Tumor invades adjacent structures/organs |