“…Tracheobronchial involvement of CD is rare, although several cases have been reported [ 1 , 2 , 5 , 6 , 8 , 9 , 11 - 13 ]. Similar to previous reports [ 2 , 6 , 9 , 13 , 14 ] and to the colonoscopic findings for CD, the bronchoscopic findings in our case were mucosal irregularity, elevation, edema, and the presence of a yellowish patch-like lesion. In the present case, as in previous cases, the pathologic findings of the bronchial biopsy were epithelial and subepithelial infiltrates of diverse types of inflammatory cells including neutrophils, macrophages, lymphocytes, and plasma cells [ 2 , 6 , 9 , 13 , 14 ].…”