If a patient experiences pain in the right shoulder, to determine whether it is cancer, it is recommended to go to the hospital for imaging tests, such as CT, X-ray, MRI, etc., to clarify and, if necessary, a pathologic biopsy to confirm the diagnosis. If cancer occurs, it may press on the local nerves to cause right shoulder pain, or the cancer has developed bone metastasis to cause pain. However, right shoulder pain is not a typical manifestation of cancer, frozen shoulder, arthritis, cold, trauma, etc. can cause right shoulder pain, therefore, a single symptom generally can not determine any disease, but also need to be combined with other clinical symptoms, test results for comprehensive consideration. It is recommended that patients go to the hospital for examination in time, and then take active treatment after clarifying the cause.