"As lungs get progressively worse, the ability of the body to compensate goes down and the heart can't pump strongly enough," says Norman Edelman of the American lung Association.
“当肺部日益恶化时，机体代偿能力下降，心脏泵血机能不够强”，美国肺协的诺曼·艾得曼说。
2
Small-cell lung cancer is the more aggressive of the two, meaning it can spread quickly to other parts of the body early in the disease.
一种是小细胞肺癌，这种肺癌更具侵袭性，在早期就能扩散到其他器官。
3
But it did not target normal tissue, or tumor tissues in other parts of the body including the colon, kidney, cervix, pancreas, lung, skin or bladder, the study showed.