In the future,it may be possible to screen for a number of different types of cancer by a simple blood test.If a blood test indicates a very early stage of lung cancer,where is the most likely place that the tumor will be growing?
A)in the wall of a large bronchus
B)in the wall of an alveolus
C)in the wall of a pulmonary vein
D)in the visceral pleural membrane
E)in the parietal pleural membrane

Question

Quizplus · Accepted Answer

Lung cancer commonly arises in the bronchial epithelium, and if detected at an early stage, the tumor is likely to still be confined to the wall of a large bronchus rather than having spread to other areas such as the alveoli or pulmonary veins.

In the Future,it May Be Possible to Screen for a Number