Oral Cancer and Complications of Cancer Therapies _ _____________________________________________
61. Radiotherapy is cytotoxic to malignant cells because it causes
66. Oral hemorrhaging during chemotherapy regimens A) occurs only spontaneously. B) may be brought on by eating or brushing.
A) hypoxia. B) dysplasia. C) hyalinization. D) free radical damage.
C) is never heralded by the presence of petechiae. D) is not exacerbated by gingivitis or periodontal disease.
62. The most common intraoral side effect of radiotherapy is A) trismus. B) mucositis. C) hemorrhage. D) osteoradionecrosis.
67. Angular cheilitis is an oral fungal infection that affects the A) hard palate. B) floor of the mouth. C) dorsum of the tongue. D) commissures of the lips and the surrounding skin. 68. Decreased immunocompetence due to chemotherapy can cause the reactivation of the varicella zoster virus, which is the etiologic agent of A) shingles. B) mucositis. C) candidiasis. D) Kaposi sarcoma. 69. When chemotherapy is administered, xerostomia A) is usually permanent. B) does not affect speech or taste. C) alters saliva to have a ropey consistency. D) cannot be alleviated until after the completion of regimen. 70. The neurologic effects caused by chemotherapy A) are usually permanent. B) are seen in the facial nerve only. C) will usually regress after chemotherapy. D) is most closely associated with the use of nystatin.
63. Radiation caries, which occur after radiotherapy, A) are a rapidly progressing pathologic state. B) are caused by increased salivary pH levels. C) are due to a less viscous salivary consistency. D) only occur on teeth with existing dental pathology. 64. Which of the following should be avoided prior to oral cancer treatment? A) Extractions of teeth that cannot be restored B) Reduction of the depths of periodontal pockets C) Complete clinical and radiographic examination of teeth D) A “watch and wait” approach for existing dental problems
65. Chemotherapy can interfere with the coagulation process because it
A) increases the number of circulating platelets. B) decreases the number of granular leukocytes. C) increases the number of agranular leukocytes. D) decreases platelet production and their ability to adhere to each other.
Course Code: DOH05OC
72
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