Fig. 2From: Late relapse of ulcerative colitis presenting as tracheobronchitis: a case reportA Bronchoscopic examination showing diffuse narrowing of the trachea with inflamed erythematous mucosa. B Photomicrograph of endotracheal mucosal biopsy specimen showing intense submucosal infiltration. The inset within B is a magnified view of lymphocytic infiltration. Scale bar, 20 μmBack to article page