Pain between the shoulder blades in people with lung cancer can occur due to several factors. It's important to note that not everyone with lung cancer will experience this symptom, and the presence of pain in this area does not necessarily mean that lung cancer is the cause. However, when shoulder blade pain is associated with lung cancer, the following reasons could be responsible:
Referred Pain: Lung cancer can cause pain in unexpected locations due to the phenomenon known as referred pain. The lungs and certain parts of the chest share nerve pathways with the upper back and shoulder blade area. Pain signals originating from the lungs may be felt in the shoulder blades, even though the actual source of the pain is the lung tumor.
Pleural Involvement: The pleura is a thin membrane that lines the outside of the lungs and the inside of the chest wall. In some cases of lung cancer, the tumor may spread to or involve the pleura. This condition is called pleural involvement or pleural metastasis. When the pleura becomes inflamed or irritated due to cancer involvement, it can cause pain between the shoulder blades.
Pressure on Nerves: If the lung tumor grows to a size that puts pressure on nearby nerves in the chest, it can cause referred pain to the shoulder blades or upper back.
Bone Metastases: Advanced lung cancer may spread (metastasize) to other parts of the body, including the bones. Bone metastases, which are cancerous growths in the bones, can cause pain in various locations, including the shoulder blades.
Coughing: Persistent or severe coughing, which is common in some cases of lung cancer, can lead to muscle strain in the chest and upper back. This muscle strain can result in pain between the shoulder blades.
It's crucial for anyone experiencing persistent or concerning symptoms, including shoulder blade pain, to seek medical evaluation promptly. Only a healthcare professional can accurately diagnose the underlying cause and recommend appropriate tests and treatments. Early detection and management of lung cancer can improve outcomes and quality of life for patients.