A case presenting with a gray coloured pseudomembrane whose removal is difficult and painful, can be___________?

Correct answer: B. Diphtheritic lesion

A. ANUG
B. Diphtheritic lesion
C. Secondary stage of syphilis
D. Desquamative gingivitis

Explanation

Diphtheria produces a thick gray pseudomembrane that is firmly adherent, so attempted removal is painful and may cause bleeding. ANUG can also form a gray slough, but it primarily affects necrotic gingival papillae rather than producing a firmly attached pharyngeal-type membrane.

Submitted by a TestUstad contributor and published by the TestUstad editorial teamLast updated 18 September 2026

Report an error

What is wrong?

Which one should be correct?

Anything to add? (optional)

The more specific you are, the faster it gets fixed. A source beats an opinion.

Prefer email? support@testustad.com

Practise Oral Mucosal Lesions

234 free Oral Mucosal Lesions MCQs from Oral Pathology and Medicine, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Start a free Oral Mucosal Lesions test All Oral Mucosal Lesions MCQs

Exams that ask Oral Pathology and Medicine questions like this

Oral Pathology and Medicine is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.

Dental Surgeon Test Oral Pathology and Medicine18 MCQs

A case presenting with a gray coloured pseudomembrane whose removal is difficult and painful, can be___________?

Practise Oral Mucosal Lesions

Exams that ask Oral Pathology and Medicine questions like this

More Oral Mucosal Lesions questions