Figure 3.

Ascending aorta is 5 cm long and 3 cm wide and lies in the middle mediastinum within the fibrous pericardium along with the pulmonary trunk. The relation of the ascending aorta and the right pulmonary artery on endoscopic ultrasonography in this position follow a simple observation “if you see one in long axis you will see the other in short axis”. If the aorta is seen in a long axis, the pulmonary artery is seen in a rounded axis and vice versa. In this figure a lymph node of subcarinal area is also seen