AGD Oral Diagnosis and Pathology 4

Question 1

Which salivary gland tumor most commonly undergoes perineural invasion and has a pattern of skip lesions?

Accepted Answer

Adenoid cystic carcinoma

Answer

Adenoid cystic carcinoma is notorious for perineural invasion and skip lesions along nerve sheaths, contributing to its high recurrence rate.

Question 2

Toothpaste-fluoride interaction causing a white, chalky, demarcated enamel lesion is best classified as:

Accepted Answer

Dental fluorosis

Answer

Dental fluorosis results from excess fluoride during enamel formation, producing white opaque to brown-stained, pitted enamel defects.

Question 3

A pigmented lesion on the palate of a patient taking antimalarial medication most likely represents:

Accepted Answer

Drug-induced melanosis

Answer

Antimalarials (e.g., hydroxychloroquine) can cause diffuse drug-induced melanosis of the oral mucosa, especially on the hard palate.

Question 4

The histologic hallmark of pemphigus vulgaris that distinguishes it from mucous membrane pemphigoid is:

Accepted Answer

Suprabasilar acantholysis with tombstone cells

Answer

Pemphigus vulgaris shows suprabasilar acantholysis with a row of remaining basal cells giving the 'tombstone' appearance, unlike the subepithelial split in pemphigoid.

Question 5

A patient presents with trismus, fever, and swelling in the submandibular and sublingual spaces bilaterally. This life-threatening condition is called:

Accepted Answer

Ludwig angina

Answer

Ludwig angina is a rapidly spreading bilateral cellulitis of the submandibular and sublingual spaces that can cause fatal airway obstruction.

(AGD) Academy of General Dentistry Certification Practice Test

(AGD) Academy of General Dentistry Certification Practice Test

AGD Oral Diagnosis and Pathology 4