Free Oral Cancer MCQs with Answers

• 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…

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

Explanation: A retromolar trigone carcinoma invading the mandible or deep muscles such as the medial pterygoid is locally advanced T4 disease.

• A. anterior third
• B. posterior third
• C. middle third
• D. lateral margin

Explanation: The posterior third of the tongue has rich access to deeper lymphatic and vascular channels, so carcinomas there have a greater tendency…

• A. Parakeratosis
• B. Hyperkeratosis
• C. Dyskeratosis
• D. Acanthosis

Explanation: Dyskeratosis means abnormal, premature keratinization of individual epithelial cells and is a feature of epithelial dysplasia, which may…

• A. Smooth muscles
• B. Reticuloendothelial system
• C. Striated muscles
• D. Blood vessels

Explanation: Kaposi sarcoma is a malignant vascular neoplasm derived from endothelial cells, producing spindle cells and slit-like vascular spaces.

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

Explanation: Squamous cell carcinoma is by far the most common malignant epithelial tumour of the oral cavity, arising from the stratified squamous…

• A. Epstein-Barr virus
• B. Herpes simplex virus type I
• C. HTLV 1
• D. Papilloma virus

Explanation: EBV, HTLV-1 and human papillomavirus are established oncogenic viruses linked with human cancers.

• A. Verruca vulgaris
• B. Lymphoepithelioma
• C. Junctional nevus
• D. Basal cell carcinoma

Explanation: Ultraviolet radiation from sunlight is a major risk factor for basal cell carcinoma, especially on sun-exposed skin.

• A. Intro epithelial carcinoma
• B. Benign neoplasm of the G.I.T
• C. Vesiculobullous lesion of skins
• D. Ulcerative lesion of G.I.T

Explanation: Bowen disease is squamous cell carcinoma in situ, meaning atypical epithelial cells involve the full epithelial thickness without invasion…

• A. Buccal mucosa
• B. Skin of the lower lip
• C. Hard Palate
• D. Dorsum of the tongue

Explanation: Among the listed choices, basal cell carcinoma most commonly occurs on sun-exposed facial skin, including the skin of the lower lip.