Devita, Hellman, and Rosenberg's Cancer

LWBK1006-13 LWW-Govindan-Review November 24, 2011 11:22

CHAPTER 13 CANCER

SCREENING

MEGAN E. WREN

DIRECTIONS Each of the numbered items below is followed by lettered answers. Select the

ONE lettered answer that is BEST in each case unless instructed otherwise.

QUESTIONS

Question 13.1. Studies of screening for cancer are subject to several types of bias. If

screening detects a cancer earlier (before it becomes symptomatic), but

treatment has no effect on the course of the disease, then the subject will

seem to live longer, than if he or she had presented symptomatically. (That

is, the cancer is known for a longer period of time, but the time of death

is not altered.) This type of bias is known as:

A. Lead-time bias

B. Length bias

C. Volunteer bias

D. Overdiagnosis bias

Question 13.2. A healthy 13-year-old girl received a vaccine against human papilloma

virus (HPV). This is an example of:

A. Primary prevention

B. Secondary prevention

C. Tertiary prevention

D. Case finding

Question 13.3. A healthy 48-year-old woman went to see her primary care physician

because she found a breast lump. The work-up found a 1-cm invasive

ducal carcinoma. This is an example of:

A. Primary prevention

B. Secondary prevention

C. Tertiary prevention

D. Case finding

Corresponding Chapters inCancer: Principles & Practice of Oncology,Ninth Edition: 56 (Principles of Cancer

Screening), 57 (Early Detection Using Proteomics), 58 (Screening for Gastrointestinal Cancers), 59 (Screening for

Gynecologic Cancers), 60 (Screening for Breast Cancer), 61 (Screening for Prostate Cancer), and 62 (Screening for

Lung Cancer).

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