Know what to look for
The early signs of lung cancer are sometimes subtle enough that they get overlooked. Tell your doctor if you experience any of the following symptoms.
Coughing up phlegm that is this color could indicate more than a common cold.
Difficulty breathing? Don’t ignore subtle changes to your respiratory system, including shortness of breath.
Sometimes an infection behind a tumor that is obstructing the airway produces a fever.
If the cancer spreads to surrounding tissue, it can lead to enlarged lymph nodes in the chest or neck.
These sensations may mean cancerous cells have invaded the pleura (membrane covering the lungs) or other nearby structures.
A rough voice could indicate that cancer has damaged some of the nerves in the throat.
Cancerous tissue that causes a narrowing of the esophagus may be to blame for this problem.
Puffiness may mean a blockage of blood flow from the neck and the face to the heart.
This symptom, when one or more fingernails start to curve downward and appear detached from the nail bed, is experienced by up to 30 percent of lung cancer patients.
This could mean that lung cancer has invaded the liver or bone marrow, where it can interfere with blood cell formation.
Neurological symptoms such as seizures may indicate that cancer has spread to the brain.
Some lung cancer patients with small-cell tumors develop this syndrome, which produces complications like osteoporosis, hypertension, and face roundness.
Another potential complication of lung cancer is excessive blood levels of calcium, which can cause tiredness, muscle weakness, confusion, and drowsiness.