Left shoulder pain could be cancer.

Left shoulder soreness may be cancer or related to other factors.

If left shoulder soreness is accompanied by low fever, fatigue, nausea, vomiting, progressive weight loss and other cachexia symptoms, patients need to be alert to the possibility of cancer. Especially when cancer such as lung cancer or breast cancer develops to a certain extent, it may invade surrounding tissues or develop bone metastases, thus causing left shoulder soreness. In addition, bone cancer may also cause bone pain in multiple parts of the body, including the left shoulder. However, left shoulder soreness is not a specific manifestation of cancer. Many benign diseases, such as scapulohumeral periarthritis, cervical spondylosis, shoulder strain, etc., may also lead to left shoulder soreness.

Therefore, in order to accurately determine the cause of left shoulder soreness, it is recommended to seek medical attention in time and conduct a comprehensive examination, including physical examination, imaging examination, histopathological examination, etc., to comprehensively determine whether there is a possibility of serious diseases such as cancer. If cancer is diagnosed, treatment should be carried out as soon as possible to improve the treatment effect and survival rate.