Figure 2From: Early duodenal adenocarcinoma resembling a submucosal tumor cured with endoscopic resection: a case report Endoscopic ultrasonography findings. Endoscopic ultrasonography (20mHz miniprobe) revealed that the duodenal wall was delineated into five layers. The tumor was visualized as a low echoic mass mainly involving the second or third layers but not the fourth or deeper layers.Back to article page