According to this website:
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it causes difficulty with inhalation but exhalation is normal...
> "Typically the expiratory part of the F/V-loop is normal: the obstruction is pushed outwards by the force of the expiration."
> "During inspiration the obstruction is sucked into the trachea with partial obstruction and flattening of the inspiratory part of the flow-volume loop."
the exact symptoms of a laryngeal tumor depends on where it is located on the larynx... above the vocal cords, on the vocal cords, or below the vocal cords...
but more generally:
**anatomy:** _mouth/nose-->pharynx-->larynx-->trachea-->bronchi-->lungs_
a tracheostomy may be necessary... basically the surgeon makes a connection between the skin outside the throat and the trachea... this bypasses the larynx (as well as pharynx and nose/mouth)...