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Corresponding 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).
