Question

Smokeless tobacco Keratosis vs. white sponge nevus:

a. Both are synonymous terms
b. White sponge nevus is a precancerous lesion
c. Smokeless tobacco keratosis is a form of leukoplakia
d. White sponge nevus is a genetic disorder

Answer 1

Smokeless tobacco keratosis and white sponge nevus are two distinct conditions. Smokeless tobacco keratosis is a form of leukoplakia caused by tobacco use. White sponge nevus is a genetic disorder characterized by thick, white patches on the oral mucosa.

Step-by-step explanation:

Smokeless tobacco keratosis and white sponge nevus are two distinct conditions.

Smokeless Tobacco Keratosis:

Smokeless tobacco keratosis is a lesion that appears as a white, wrinkled patch on the inside of the mouth. It is caused by the prolonged use of smokeless tobacco products, such as chewing tobacco and snuff. It is considered as a form of leukoplakia, which is a condition characterized by thick, white patches on the oral mucosa. Unlike white sponge nevus, smokeless tobacco keratosis is not a genetic disorder or a precancerous lesion.

White Sponge Nevus:

White sponge nevus, on the other hand, is a genetic disorder that is inherited in an autosomal dominant manner. It is characterized by the presence of thick, white, sponge-like patches on the oral mucosa. Although it may appear similar to smokeless tobacco keratosis, white sponge nevus is not caused by tobacco use and is not associated with an increased risk of cancer.