Assessment of Pre-operative Endobronchial Ultrasonography for Determination of Depth of Tracheobronchial Tumors (Symposium 1)

Abstract

Background. Endobronchial Ultrasonography (EBUS) supplies cross sectional images of tracheobronchial wall and peri-bronchial mediastinal structures. We assess usefulness of pre-operative EBUS for determination of depth of tumor invasion. Thirty-seven lesions were registered for this study. Thirty-two in 37 lesions had correct diagnosis in depth of tumor invasion. In other 5 lesions, 3 lesions were carcinoma in situ. One lesion was diagnosed to invade beyond adventitia whereas this lesion wes invaded to adventitia not beyond adventitia histopathologically. The residual one lesion was diagnosed to invade to adventitia whereas this lesion wes invaded to submucosa not beyond cartilage histopathologically. The reason of overdiagnosis of last lesion was impossibility of differential diagnosis between tumor invasion and lymphocyte infiltration.