Ibsen: Oral Pathology for the Dental Hygienist, 7th Edition Chapter 07: Neoplasia

Which choice represents a characteristic of malignant tumors? a. Encapsulated b. Ability to spread to distant sites c. Benign d. Cells resemble normal cells Answer- d Anaplastic means the tumor a. is composed of cells that vary in size and shape. b. has cells with darker nuclei than those of normal cells. c. has cells that exhibit an increased nuclear-to-cytoplasmic ratio. d. does not resemble the tissue from which it was derived. Answer- a A benign tumor of bone is called a (n) a. osteoma. b. osteogenic sarcoma. c. chondroma. d. carcinoma. Answer- c A papilloma is a _____ tumor derived from _____ epithelium. a. benign; salivary gland b. malignant; squamous c. benign; squamous d. malignant; odontogenic Answer- c Where do most cases of papilloma occur? a. Hard palate b. Buccal mucosa c. Soft palate or tongue d. Retro molar area Answer- d Idiopathic leukoplakia a. is a malignant lesion of the oral mucosa. b. can be rubbed off with gauze squares. c. is caused by direct irritation, as in tobacco pouch keratosis. d. does not have a specific known cause. Answer- c An intraoral mucosal lesion that shows a mixture of red and white areas is termed a. erythroplakia. b. speckled erythroplakia. c. speckled leukoplakia. d. leukoplakia. Answer- c Which statement about erythroplakia is true? a. Most cases of erythroplakia occur on the buccal mucosa and vestibule. b. Erythroplakia is more common than leukoplakia. c. When examined microscopically, 90% of cases of erythroplakia demonstrate epithelial dysplasia or squamous cell carcinoma. d. Erythroplakia is considered a less serious clinical finding than leukoplakia. Answer- b