Application of CD34 expression combined with three-phase dynamic contrast-enhanced computed tomography scanning in preoperative staging of gastric cancer

Figure 1 T staging based on three-phase dynamic contrast-enhanced computed tomography scanning. A: In stage T1, the tumor invaded the muscularis mucosa of the stomach wall but did not invade the muscularis propria, and a clear fat layer can be seen (orange arrow); B: In stage T2, the local gastric wall of the lesser curvature of the stomach thickened uniformly and enhanced obviously, and the tumor invaded the muscularis propria. The low enhancement band of submucosal middle layer was interrupted and disappeared, and the residual part of the outer layer was slightly enhanced, with a smooth outer edge of the gastric wall (orange arrow); C: In stage T3, the highly enhanced tumor invaded the whole stomach wall, and a few short strips were observed on the serosa surface, with the surrounding fat space blurred (orange arrow); D: In stage T4, the soft tissue masses inside and outside the gastric wall of the lesser curvature side of the stomach were significantly enhanced, and the muscular interruption was clearly displayed, with the surrounding fat space banded with infiltration and accompanied by multiple liver metastases (orange arrow).