【許睿紘】評論
TX： tumor cannot be assessedT0： no evidence of primary tumorTis： high-grade dysplasia, defined as malignant cells confined by the basement membraneT1：Tumor invades the lemina propria or muscularis mucosa(1a), or submucosa(1b)T2： Tumor invades the muscularis propriaT3： Tumor invades adventitiaT4： Tumor invades sdhacent structures 4a pleura, pericardium, azygos vein, diaphragm, peritoneum 4b other adjacent structures