All Free Oral Pathology and Medicine MCQs with Answers

• 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…

• 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.

• 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…

• 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…

• 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.

• 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.

• A. Mast cells
• B. Lymphocytes
• C. Giant cells
• D. Neutrophilis

Explanation: Lymphocytes are the predominant cells commonly encountered in a chronic inflammatory granuloma, although macrophages, epithelioid cells…

• A. Absence of capsule
• B. Mixed origin
• C. Presence of an incomplete capsule
• D. Perineural spread

Explanation: Pleomorphic adenoma often has an incomplete capsule and may send microscopic pseudopod-like extensions into surrounding tissue.

• A. Mucocele
• B. Dentigerous cyst
• C. Dermoid cyst
• D. Ranula

Explanation: A ranula is a mucus extravasation or retention lesion in the floor of the mouth, usually arising from obstruction or rupture of the…

• A. Salivary gland & duct
• B. Salivary gland
• C. Salivary duct only
• D. Salivary gland tumours

Explanation: Sialography introduces contrast into a salivary duct and outlines both the ductal system and the glandular tissue, allowing abnormalities…

• A. Sublingual gland
• B. Submandibular gland
• C. Ranula
• D. Cervical lymph nodes when they are enlarged due to inflammation

Explanation: The submandibular gland lies partly around the posterior border of the mylohyoid muscle, so it is best examined between one finger inside…

• A. Carcinoma of the parotid gland
• B. A pleomorphic adenoma of parotid gland
• C. An adenolymphoma of the parotid gland
• D. None of the above

Explanation: Warthin tumour is an adenolymphoma, classically arising in the parotid and containing epithelial and lymphoid components.

• A. palate
• B. dorsum of tongue
• C. cheeks
• D. gingival

Explanation: Necrotizing sialometaplasia most often affects the posterior hard palate or the hard–soft palate junction, where minor salivary glands are…

• A. Palate
• B. Cheek
• C. Tongue
• D. Neck

Explanation: The palate is the commonest site for salivary gland tumours arising in an ectopic or minor-gland location, particularly because it…

• A. Epidemic parotitis
• B. Iodine mumps
• C. Nutritional mumps
• D. Nonspecific mumps

Explanation: Chemical mumps is an acute, usually noninfectious swelling of the salivary glands caused by substances such as iodinated compounds, so it…

• A. Are common cause of acute parotitis
• B. Are commonest in the parotid ducts
• C. produce pain on eating
• D. Are associated with hypercaleaemic statesTrack Health Symptoms

Explanation: A salivary stone obstructs flow when eating stimulates secretion, producing characteristic meal-time pain and swelling.

• A. Unaffected
• B. Increased in morning & decrease in dayConsult Online Doctors
• C. High
• D. Low

Explanation: Reduced salivary flow in xerostomia lowers bicarbonate buffering, so salivary pH tends to become acidic or low.

• A. PalateExplore Anatomy Models
• B. Upper lip
• C. Floor of the mouth
• D. Buccal mucosa

Explanation: The palate is the commonest intraoral site for pleomorphic adenoma, especially the junction of the hard and soft palate.

• A. Mucoepidermoid carcinoma
• B. Basal cell adenocarcinoma
• C. Adenoid Cystic carcinoma
• D. Salivary duct carcinoma

Explanation: Basal cell adenocarcinoma is generally a low-grade salivary malignancy, unlike salivary duct carcinoma and many adenoid cystic carcinomas.

• A. Patrotid
• B. Submanidbular
• C. Sublingual
• D. Minor

Explanation: Minor salivary gland tumours have the highest proportion of malignancy, followed by sublingual and submandibular gland tumours.