Table 3.

Bronchoscopic and histopathological examinations.

Feature	N = 109	%
Bronchoscopy (n = 107)
Multiple intraluminal nodules, masses	64/107	59.9
Luminal stenosis, occlusion	54/107	50.5
Bronchial wall thickening	30/107	28.0
Brittle and easily bleeding mucosa	26/107	24.3
Mucosal unevenness	23/107	21.5
Mucosal hyperemia and edema	22/107	20.6
Mucosal paleness	1/107	0.9
Wall rigidity	1/107	0.9
Histopathology (n = 109)
Submucosal amyloid deposition	109/109	100.0
Brick red amyloid by Congo red staining	50/109	45.9
Yellow-green birefringence of amyloid by polarizing microscopy	22/109	20.2