Clinical application of ultrasound endoscope using linear array transducer for transesophageal ultrasonographic diagnosis of the disease of the mediastinum.

Transesophageal ultrasound endoscopy by the linear array transducer built-in on top of the fiber optic gastroduodenoscope was applied for 13 clinical cases with various mediastinal lesions. It was quite valuable to diagnose mediastinal lesions such as lymphadenopathy in sarcoidosis, lymph node metastasis and direct invasion of lung cancer, dilatation of the diameter of the right pulmonary artery in pulmonary hypertension.