Nasopharyngeal carcinoma is prone to bone metastasis and lung metastasis. First of all, you can't judge that you are lung cancer by your own subjective feelings, because many symptoms are not specific, which is why you need to cooperate with modern laboratory tests to diagnose the disease. You should have found the lung shadow by X-ray. It is suggested to do an enhanced CT to explore the nature and blood supply of that nodule and whether there is any corresponding reaction in mediastinal lymph nodes or pleura. If direct biopsy is not recommended for highly suspicious lung cancer nodules (which may accelerate the spread of cancer cells), then go in and have a look with a tracheal microscope.

Moreover, the recurrence of cancer is not necessarily at the primary site, but may be far away, so we should not take it lightly! Go for imaging and laboratory screening to determine whether it is lung cancer.