All Free Oral Pathology and Medicine MCQs with Answers

• A. Stage I
• B. Stage IV
• C. Stage III
• D. Stage II

Explanation: With M0 disease, T2 combined with N2 places an oral carcinoma in the stage IV group, specifically stage IVA in common AJCC…

• A. Buccal mucosa
• B. Palate
• C. Lateral border of tongue
• D. Floor of mouth

Explanation: Leukoplakia on the floor of the mouth has a particularly high risk of epithelial dysplasia and malignant transformation, along with the…

• A. Biopsy
• B. Complete radiographic survey
• C. Exfoliative cytology
• D. Pantograph

Explanation: A biopsy provides tissue for microscopic examination, allowing definitive confirmation of malignancy and its type.

• A. Malignant melanoma
• B. Ewing's sarcoma
• C. Kaposi's sarcoma
• D. Squamous cell carcinoma

Explanation: Ewing sarcoma cells commonly contain abundant glycogen, which can be demonstrated histochemically with PAS staining and helps distinguish…

• A. Surgery + radiotherapy
• B. Laser technique
• C. Excision
• D. Alpha (a) interferon

Explanation: Verrucous carcinoma is treated primarily by complete surgical excision because it is locally destructive but has very low metastatic…

• A. Chemotherapy
• B. Radiation involving normal tissues
• C. Lasers
• D. Radiation administered interstially through catheters

Explanation: Brachytherapy is internal radiotherapy in which radioactive sources are placed close to or within the tumour, commonly interstitially…

• A. Lateral margin
• B. Ventral surface
• C. Tip of tongue
• D. Posterior one third

Explanation: The lateral tongue, particularly its posterolateral border, is the commonest site for squamous cell carcinoma of the tongue.

• A. Mandibular condyle
• B. Anterior maxilla
• C. Posterior moral region
• D. Maxillary tuberosity

Explanation: Metastases to the jaws most often involve the posterior mandible, especially the molar and ramus region, because of its abundant marrow…

• A. Oral hairy leukoplakia
• B. White spongy naevus
• C. Leukemia
• D. Speckled Leukoplakia

Explanation: Speckled or erythroleukoplakia contains red areas mixed with white keratosis and has a high risk of epithelial dysplasia or carcinoma.

• A. Floor of the sinus
• B. Posterior wall of the sinus
• C. Roof of the sinus
• D. Anterior wall of the sinus

Explanation: The floor of the maxillary sinus forms the roof of the alveolar process and lies directly above the maxillary tooth roots.

• A. Adenocarcinoma
• B. Adenoid cystic carcinoma
• C. Basal cell adenoma
• D. Squamous cell carcinoma

Explanation: Adenoid cystic carcinoma has a strong tendency for perineural invasion, which may produce pain, numbness, or cranial nerve symptoms.

• A. Squamous cell carcinoma
• B. Adenocarcinoma
• C. Basal cell carcinoma
• D. Melanoma

Explanation: Basal cell carcinoma is locally destructive but only very rarely metastasizes, whereas adenocarcinoma, squamous cell carcinoma, and…

• A. T1 No Mo
• B. T1 NI Mo
• C. T1 N2 Mo
• D. T2 No Mo

Explanation: A tumour measuring 2 cm or less is T1, clinically absent regional nodes are N0, and absent distant spread is M0.

• A. Benign tumour of skin and mucous membrane
• B. Malignant tumour of skin and mucous membrane
• C. Malignant tumour of melanophores
• D. Benign tumor of melanophores

Explanation: Melanoma is a malignant tumour of melanocytes that can occur in skin and mucous membranes.

• A. Infection
• B. Metastatic neoplasia
• C. Dental Manipulation
• D. CNS disease

Explanation: Unexplained numbness of the lower lip or chin is the classic numb-chin syndrome and may indicate malignant involvement of the mental or…

• A. CHaracteristically is columner-celled:
• B. Has a recognized association with chewing gum
• C. Has a recognized association with chewing betel nut
• D. Has a recognized association with geographic tongue

Explanation: Buccal mucosal carcinoma has a recognized association with betel-quid or areca-nut chewing, particularly in regions where this habit is…

• A. Metaplasia
• B. Pre-cancer
• C. Dysplasia
• D. Carcinoma

Explanation: Epithelial pearls are concentric collections of keratinizing malignant squamous cells and are characteristic of well-differentiated…

• A. Lymphatics
• B. Direct textension
• C. Blood vessels
• D. Aspiration of tumor cells

Explanation: Oral squamous cell carcinoma most commonly spreads first through lymphatic channels to regional cervical lymph nodes.

• A. Have a poor oro-dental hygiene, nutritional deficiencies and are chronic alcoholics
• B. Are old, chronic alcoholics and regularly and regularly use tobacco
• C. Are middle aged have a poor oro-dental hygiene and regularly use tabacco
• D. Are young, have poor oro-dental hygiene and are heavy smokers

Explanation: The strongest established lifestyle risks are increasing age, tobacco use and chronic alcohol consumption, with alcohol and tobacco acting…

• A. Fibrosarcoma
• B. Nerufibroma
• C. Malingant fibrous histiocytoma
• D. Ameloblastic fibroma

Explanation: A storiform, or cartwheel-like, arrangement of tumour cells is a classic microscopic pattern of malignant fibrous histiocytoma, now termed…