Expanded indication: diagnosis of pulmonary embolism by transesophageal echocardiography.

Transesophageal echocardiography is a useful diagnostic tool not only in examination of the heart, but also in examination of the great arteries. Its role in the diagnosis of aortic aneurysm and dissection has been well-established. The pulmonary artery, especially the right pulmonary artery, also can be visualized clearly by this technique. In this report, we described a patient with massive pulmonary embolism which was diagnosed by transesophageal echocardiography, and was confirmed by pulmonary angiography.