Lung cancer can make it difficult to swallow as well as create a feeling that something is caught in your throat.
This can point to inflammation of the esophagus, also known as dysphagia – a fatal warning sign as patients who display this symptom are at an increased risk of dying.
Respiratory illness
Persistent respiratory diseases like bronchitis or pneumonia can be a sign of malignant tumors in your lungs.
Unexpected weight loss
Though losing 10-pounds here or gaining 10-pounds there is totally normal, a sudden drop in weight should never be ignored, experts say. It could be linked to serious health conditions such as lung cancer. You want to pay attention if you have a lack of energy, too. This could be the result of lung cancer.