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A 65-Year-Old Man Is Found to Have a Lung Nodule

question 53

Multiple Choice

A 65-year-old man is found to have a lung nodule on chest x-ray performed for evaluation of a dry cough. The cough has since resolved, and he has no other symptoms. The patient has a 30-pack-year smoking history but quit 2 years ago. He has no family history of cancer. CT scan of the chest reveals a 2-cm, peripheral, round lesion in the right lower lung lobe that is surrounded by lung parenchyma. The borders are irregular and no calcification is present. There are no other lung lesions or enlarged lymph nodes. Which of the following is the best next step in management of this patient's lung lesion?

Analyze how technological advances affect supply.

Grasp the mechanism of price adjustment to equilibrate quantity demanded and quantity supplied.

Recognize the relationship between market equilibrium, surplus, and shortage.

Distinguish between movements along and shifts of the supply and demand curves.

Definitions:

Temporal Summation

A process by which multiple subthreshold signals can combine over time to trigger a significant response in a neuron.

Refractory Periods

Time intervals following an action potential during which a neuron is incapable of firing again or the threshold for firing is significantly raised.

Nerve Impulses

Electrical signals that travel along the nerves, enabling communication between the brain and the body.

Nodes of Ranvier

Gaps in the myelin sheath of nerve fibers where the axon is exposed, allowing for the rapid conduction of nerve impulses.