Abstract
The otologic diagnostic powder test with grape – sugar simple will be performed with
a powder – blower. It permits a good differentiation between dry squamous epithelium
and wet mucosa. In our opinion this test therefore is unrenouncable in microscopic
differentiation between mucosa in central perforations on one hand and atrophic scars,
retraction pockets or adhesive epithelium of the drum or complete atelectasis of the
tympanic cavity on the other hand.
