Free Oral Mucosal Lesions MCQs with Answers
234 Oral Mucosal Lesions MCQs from Oral Pathology and Medicine, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
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- A. Herpangina
- B. Herpes zoster
- C. Herpes simplex
- D. Stevens Jhonson syndrome
Explanation: Severe bullae, target lesions with an erythematous halo, and oral, ocular or genital mucosal involvement indicate Stevens-Johnson…
Correct answer: Stevens Jhonson syndrome- A. Monilial gingivitis
- B. Desquamative gingivitis
- C. Herpetic gingivitis
- D. Acute ulcerative gingivitis
Explanation: Erosive lichen planus commonly presents as desquamative gingivitis, with painful erythematous and ulcerated gingiva.
Correct answer: Desquamative gingivitis- A. Both B & C
- B. pemphigus vulgaris
- C. Lupus erythematosus
- D. Scleroderma
- E. Psoriasis
Explanation: Direct immunofluorescence is positive in pemphigus vulgaris, showing intercellular IgG in a fish-net pattern, and in lupus erythematosus…
Correct answer: Both B & C- A. Atrophic lichen planus
- B. Hypertrophic lichen planus
- C. bullous lichen planus
- D. Verrucous lichen planus
Explanation: Recognized lichen planus variants include atrophic, hypertrophic and bullous forms.
Correct answer: Verrucous lichen planus- A. Pemphigus
- B. Bullous pemphigoid
- C. Candida albicans
- D. Lichen planus
Explanation: Pemphigus causes acantholysis, with loss of cohesion between epithelial cells and formation of an intraepithelial, usually suprabasal…
Correct answer: Pemphigus- A. betel nut chewing
- B. intake of certain drugs
- C. cigarette smoking
- D. intake of alcohol
Explanation: Lichenoid reactions are most commonly medication-related, with drugs producing lesions that resemble idiopathic lichen planus clinically…
Correct answer: intake of certain drugs- A. Mixed cellular inflammatory infiltrate
- B. Antiepithelial antibodies
- C. Presence of T-lymphocytes predominantly
- D. Scattered infiltrate with ill-defined lower border
Explanation: Lichen planus is a T-cell-mediated interface mucositis, so histology shows a dense, predominantly T-lymphocytic band beneath the…
Correct answer: Presence of T-lymphocytes predominantly- A. Acanthosis
- B. Hyperparakeratosis
- C. Hyperorthokeratosis
- D. Acantholysis
Explanation: Pemphigus is defined histologically by acantholysis, the breakdown of desmosomal attachment between epithelial cells, producing an…
Correct answer: Acantholysis- A. painless vesicular self limiting disease
- B. An acute self limiting disease, of skin and oral mucous membrane
- C. A viral disease
- D. Bacterial infection
Explanation: Erythema multiforme is an acute, usually self-limiting inflammatory reaction affecting skin and mucous membranes, often producing target…
Correct answer: An acute self limiting disease, of skin and oral mucous membrane- A. Pernicious anaemia
- B. Rickets with involvement of teeth and bones
- C. Vitamin A deficiency and involvement of oral epithelium and skin
- D. Diffuse tender ulceration on the palate predominantly
Explanation: Darier disease is an inherited disorder of keratinization involving the skin and sometimes the oral epithelium, with features resembling…
Correct answer: Vitamin A deficiency and involvement of oral epithelium and skin- A. Erythema multiforme
- B. Pemphigoid
- C. Impetigo
- D. Psoriasis
Explanation: Koebner's phenomenon is the appearance of lesions at sites of trauma, classically seen in psoriasis and also possible in lichen planus and…
Correct answer: Psoriasis- A. Lichen planus
- B. ANUG
- C. Apthous disease
- D. pemphigus
Explanation: A Tzanck smear in pemphigus shows acantholytic Tzanck cells, supporting the diagnosis of an intraepithelial blistering disorder.
Correct answer: pemphigus- A. Verrucous
- B. Hypertrophic
- C. Atrophic
- D. Erosive
Explanation: Atrophic, hypertrophic, and erosive forms are recognized clinical patterns of lichen planus, whereas verrucous is not usually listed as a…
Correct answer: Verrucous- A. Macule
- B. Bulla
- C. Papule
- D. Nodule
Explanation: A bulla is a fluid-filled elevation larger than a vesicle, whereas a macule is flat and a papule or nodule is solid.
Correct answer: Bulla- A. Tzanck cells
- B. Rushton bodies
- C. Donovan bodies
- D. Civatte bodies
Explanation: Civatte bodies are apoptotic, shrunken keratinocytes produced by degeneration of the basal layer in lichen planus, with eosinophilic…
Correct answer: Civatte bodies- A. Psoriasis
- B. Lichen planus
- C. Leukoplakia
- D. Pemphigus
Explanation: Munro microabscesses are collections of neutrophils within the parakeratin layer and are characteristic of psoriasis.
Correct answer: Psoriasis- A. eipdermolysis bullosa
- B. bullous pemphigus
- C. herpes simplex
- D. erythema multiforme
Explanation: A positive Nikolsky sign, in which rubbing causes epithelial separation, is classically associated with pemphigus due to loss of…
Correct answer: bullous pemphigus- A. Dentinogenesis imperfecta
- B. Fordyce spots
- C. White radiating lines on the buccal mucosa
- D. White, chalky enamel surface
Explanation: Lichen planus commonly produces Wickham striae, appearing as fine white, radiating lines or a lace-like pattern, especially on the buccal…
Correct answer: White radiating lines on the buccal mucosa- A. Psoriasis
- B. Chronic discoid lupus erythematosus
- C. Pemphigus
- D. Benign mucous membrane pemphigiod
Explanation: Mucous membrane pemphigoid commonly causes painful desquamative gingivitis, with epithelial loss and bleeding on gentle brushing.
Correct answer: Benign mucous membrane pemphigiod- A. Macule
- B. Epulits
- C. Nodule
- D. papule
Explanation: A macule is a flat, circumscribed change in colour without elevation or depression, and it may vary in size and shape.
Correct answer: Macule