Friday, 4 December 2015

Differentiate clinically between necrotic and keratotic white lesions | MDS entrance preaparations


What is a simple way to differentiate clinically between necrotic and keratotic white lesions of the oral mucosa?

a. Scraping off
b. Tolujdjne blue as a metachromatic nuclear stain
c. Fine needle aspiration 
d. Prebiopsy aspiration


The correct answer is A: Necrotic lesions of the mucosa, such as those caused by candidal infections, scrape off when gently rubbed with a moist tongue blade. On the other hand, because keratotic lesions result from epithelial changes, scraping fails to dislodge them.


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