What causes pain on the lungs while breathing with thyroid cancer?
Patient: My 15 year old son was diagnosed with thyroid cancer in October. He had a bilateral neck dissection. The cancer metastasized to his lymph nodes and lungs. He is now complaining of left lung pain when he takes a deep breath with profuse sweating. Can it be related? Doctor: Thanks for your question on HCM. Since you are saying that he is having thyroid cancer (operated) with lung and lymphnodes metastases,  his chest pain can be due to1. Pleural effusion2. Pneumonia3. Lung metastases Malignant pleural effusion is very common in thyroid cancers and if present can cause pain on inhalation. Pneumonia is another possibility. And if worsening of lung metastases is there than this can also cause pain.So better to get done chest x ray and if needed CT THORAX to rule out all these.