“…Summarizing the literature (1,3,4,7,(11)(12)(13)(14)(15) on lung melanin in recent years, we found that: (I) Pulmonary melanoma has no specific clinical manifestations, but it is frequently characterized by coughing, hemoptysis, dull chest pain, and other symptoms. (II) It is more likely to occur in the lower lobe of the left lung, the metastasis rate of mediastinal lymph nodes is lower than that of lung cancer, and the mutation rate of BRAF is low, but the prognosis is poor, and the median survival is 24.3 months.…”