Figure 4From: Is endosonography an effective method for detection and local staging of the ampullary carcinoma? A prospective studyCorresponding endosonographic image (7.5 MHz) of the same (fig. 3) patient. Hypoechoic mass invading the duodenum. Enlarged hypoechoic regional lymph nodes are also present. Carcinoma of the ampulla of Vater:T3N1. (DL: duodenal lumen, T: tumour mass, LN: metastatic lymph nodes).Back to article page