Cancer that originates in the cells of the lungs is known as lung cancer. Even though smoking is the leading cause of lung cancer, lifestyle changes with exposure to chemicals and other irritants show an increase in cases worldwide. Cancerous cells from the lungs could enter the bloodstream and affect other organs too. The following are some of the initial signs and symptoms of lung cancer.
Respiratory system symptoms. Initial symptoms of lung cancer occur in the respiratory system, gradually spreading to other parts of the body. As the cancer cells multiply, they form tumors that develop within the lungs and its surrounding membranes. Symptoms of cancer could include:
- Frequent bouts of pneumonia or bronchitis
- Changes in voice and hoarseness.
- A recurring or persistent cough that produces blood-stained mucus as the disease progresses.
- Chest pain that increases with breathing and coughing.
- Shortness of breath even with mild physical activity
Cardiovascular system. As the disease progresses, cancer cells enter the circulatory system . Once in the bloodstream, cancer often progresses to other organs. Bleeding tumors in the airways sometimes lead to blood-stained mucus. People with lung cancer are at a higher risk for blood clots. A life-threatening condition called a pulmonary embolism occurs when a clot makes its way to the lungs.
Immune system. Cancer in the lymph nodes could show symptoms that include:
- Lumps and bumps on the neck, collarbone or armpits
- Swelling of the neck or face
Excretory system. The liver is a commonly affected organ when cancer spreads. Symptoms could cause pain on the right side and yellowing of the whites of your eyes and skin due to jaundice.
Central nervous system. As the cancer cells spread, the brain could also be affected. Common signs of this are:
- Frequent headaches
- Weakness or numbness of limbs
- Problems balancing and an unsteady gait
- Memory loss
- Dizziness
- Visual changes
- Seizures
Skeletal and muscular systems. Pain in the bones and muscles, bone weakness, could be signs that cancer has traveled to the bones. Certain autoimmune disorders are also caused by cancerous cells that lead to nerve damage, which could cause muscle weakness.
With improvements in medicine, doctors are capable of detecting cancer growth and slowing their progress. Although many of these symptoms may point to harmless conditions, it is advisable to consult a medical professional for a full diagnosis.
