- Substances found in tobacco smoke damage the DNA within cells, which leads to mutations that cause uncontrolled cell division. This causes tumors to grow.
tumor formation - Uncontrolled cell growth causes tumors to grow, fed by a network of blood vessels. The tumor destroys the surrounding cells.
- Tumor cells may spread through the blood vessels or lymphatic vessels and form new tumors in the body.
brain tumor - Lung cancer often results in metastatic tumors in the brain.
Tobacco smoke contains carcinogenic substances that damage DNA. This may lead to uncontrolled cell growth and the formation of tumors.
Besides destroying tissues, malignant or cancerous tumors may cause metastatic tumors: tumor cells spread throughout the lymphatic system or the blood vessels and form tumors in other parts of the body.