Question

what is this lung cancer and why does my dad have it?

Answer 1

Answer:

A cancer that begins in the lungs and most often occurs in people who smoke.

Two major types of lung cancer are non-small cell lung cancer and small cell lung cancer.

Causes of lung cancer include smoking, second-hand smoke, exposure to certain toxins and family history.

Answer 2

Answer:

It happens in lungs who mostly smoke