541. Metastases from carinoma of tongue by blood stream is more likely when the carcinoma involves the__________?
A. anterior third
B. middle third
C. posterior third
D. lateral margin

542. Features characteristic of leukoplakia include all except_____________?
A. Hyperkeratosis
B. Plasma cell infiltration within the dermal papilae
C. Clinically, a paint like patch
D. A moist shiny lesion

543. Leukoplakia with the worst prognosis is seen on the_____________?
A. Dorsum of tongue
B. Floor of mouth
C. Buccal mucosa
D. Palate

544. In which of the following type of tumour the HPV-6 can be detected ?
A. Papilloma
C. Sarcoma
D. Pyogenic Granuloma

545. Which of the following epithelial changes commonly signify precancerous condition______________?
A. Dyskeratosis
B. Hyperkeratosis
C. Parakeratosis
D. Acanthosis

546. Which of the following is not a feature of torus mandibularis ?
A. Common in Mongoloids
B. Present on the lingual surface of mandible below the mylohyoid line
C. Usually Bilateral
D. May or may not associated with torus palatinus

547. Which of the following does not have a viral etiology ?
A. Burkitt’s lymphoma
B. Nasopharyngeal carcinoma
C. Hodgkin’s lymphoma
D. Hepatocellular carcinoma

548. Increased incidence of squamous cell carcinoma of the skin is due to all except____________?
A. Ultraviolet radiation
B. Actinic keratitis
C. Alcohol
D. None of the above

549. Kaposi’s sarcoma is a tumour of_____________?
A. Blood vessels
B. Reticuloendothelial system
C. Striated muscles
D. Smooth muscles

550. Which of the following is most likely to be fatal ?
A. Osteochondroma
B. Giant cell tumor
C. Paget’s disease
D. Multiple myeloma