The causes of darkening of face in the advanced stage of lung cancer usually include liver and kidney dysfunction, malignant fluid or toxin accumulation, etc., which need to be treated by doctor in time once discovered.
Darkening of face in advanced stage of lung cancer may be related to liver and kidney dysfunction, because liver is an important occasion to metabolize red blood cells, which will be decomposed and pooled into bile in liver, and then discharged by contraction of gallbladder wall to participate in digestion of food when physiologically needed.
When metastasis of lung cancer causes liver and kidney dysfunction it may lead to symptoms such as wasting, malnutrition and grayish color.
Besides, the accumulation of malodorous fluid or toxin may also cause the dark color of patients with advanced lung cancer, which is caused by the metabolic wastes in the body that cannot be discharged out of the body in time.