Some cases of lung cancer can cause shoulder pain. Most of the reasons for shoulder pain are muscle strain, or frozen shoulder, or traumatic pull, but the following cases of lung cancer can also cause shoulder pain: 1. supraglottic sulcus of lung cancer, also called Pancoast tumor, the lesion stimulates the local pleura, resulting in local pull and shoulder pain; 2. late stage lung cancer, late stage lung cancer metastasis to local bones, such as scapula, ribs, will also feel shoulder pain Moreover, shoulder pain is often a condition where the effect of medication or physiotherapy is not good, suggesting that if the effect of conventional treatment is not good, further examination in hospital must be conducted.