A patient with a bronchial carcinoid-producing unilateral hypoperfusion of the lung
is described. Bronchoscopic photographs show the adenoma to assume different intrabronchial
positions during inspiration and expiration. Although patent during inspiration, the
lumen was effectively occluded during expiration. The adenoma exhibited a ball-valve
movement which is speculated to be the initial mechanism of hypoperfusion in this
setting.
Bronchial tumor - Hypoperfusion of the lung
