Transabdominal ultrasonography in preoperative staging of gastric cancer

Figure 5 Differentiation between benign and metastatic lymph nodes. A: Benign lymph nodes. Sonogram shows multiple hypoechoic lymph nodes (arrow) adjacent to the greater curvature of stomach (STO). Of them, the largest is 1.8 cm with a distinct border. These lymph nodes are misdiagnosed as metastatic with transabdominal US. Pathologically, all theses lymph nodes are reactive and noncancerous. B: Metastatic lymph node. Sonogram shows hypoechoic lymph node (arrow) adjacent to the lesser curvature of stomach (STO) with 1.6 cm in size and a distinct border. Pathologic examination confirms this lymph node is metastatic.