The symptoms of nasopharyngeal carcinoma with lung metastasis are determined according to the size of the metastases in the lung, as follows: 1. Small metastases: If the metastases in the lung are very small, there are usually no typical symptoms. 2. Further phalanx of metastases: At this time, it will stimulate the trachea and bronchus and lead to cough reflex, which will manifest as dry cough, cough, or even coughing sputum. 3. Larger metastases: Blockage of bronchus by metastases will lead to the symptoms of obstructive pneumonia, manifested as fever, chills and other inflammatory symptoms. If the lesion progresses further, it will cause the lesion to compress the mediastinal lymph nodes and cause symptoms such as dyspnea and respiratory failure, and the condition will be more serious.