Quick check Staging of GASTRIC CANCER CT

Spiral CT staging of gastric cancer is the main technology of preoperative staging diagnosis of gastric cancer, and it is of great significance

Lesion site: 30% located in the antrum, 30% in the stomach, 30% in the gastric base, cardia, 10% diffuse infiltrative

2010 AJCC Gastric Cancer TNM Staging (7th Edition)

T1 tumor invades the mucosal lamina or submucosal layer T1a tumor invades the mucosal lamina; T1b Tumor invades the submucosal layer

T2 Tumor invades the muscle barrier

T3 Tumor invades the subserous layer

T4 T4a Tumor penetrates the serous membrane; T4b Tumors invade adjacent organs

N1 1 to 2 lymph node metastases

N2 3 to 6 lymph node metastases

N3 N3a 7 to 15 lymph node metastases; N3b ≥ 16 lymph node metastases

Mx is removed: the new staging removes Mx (distant metastases cannot be assessed

T1: The low-density mucosal layer remains intact

T2: The stomach wall is thickened, the low-density band is interrupted, the outer contour is smooth, and the surrounding fat layer is clearly striped less than 1/3