Submucosal fibrosis (1 of 4)
Under standard light. Note the whitish appearance that is visible through the mucosa.
Submucosal fibrosis (3 of 4)
Under strobe light, closed phase of vibration. Shows imperfect match but no obvious protrusion.
Submucosal fibrosis (4 of 4)
Under strobe light, open phase of vibration. Amplitude of vibration (distance of vibratory separation) not as great as would be expected in a normal larynx; this is due to the stiffening effect of fibrosis.
Anterior saccular cyst (1 of 4)
Breathing position, with a saccular cyst protruding from the right anterior ventricle (left of image). The cyst’s location, color, and superficial vessels indicate that it is neither a polyp nor granuloma.
Anterior saccular cyst (2 of 4)
Still closer view (under strobe light), breathing position, showing that the cyst does not arise from the cord, but appears to be depressing the anterior end of the right cord (left of image) slightly. On the left cord is an incidental finding of margin swelling, which is unsurprising in this very talkative individual.
Anterior saccular cyst (3 of 4)
Phonation, strobe light, open phase of vibration. The laryngeal vestibule between the false cords is partially blocked. The cyst occasionally participates in vibration, making an extra sound.