Right shoulder right arm pain exists is the possibility of cancer, such as intravertebral canal tumors, but generally speaking may be relatively small, also need to consider frozen shoulder, osteoarthritis and other common diseases. 1. Frozen shoulder: adhesion of muscle tissues in the shoulder, resulting in shoulder pain and limited movement. 2. Osteoarthritis: It can lead to severe irritation of the ligaments and joint capsule around the shoulder joint, resulting in soreness and pain in the upper arm and forearm. 3. Intravertebral canal tumor: such as in the intravertebral canal tumor can also be manifested in the right shoulder and right arm pain, this is because the bone tumor compresses the nerve root or dural sac, resulting in pain in the right shoulder or arm, but the tumor is rare. In addition, it may also be seen in benign tumors of bone, benign tumors of soft tissues and other diseases. If the symptoms of right shoulder and right arm pain appear and continue to be unrelieved, it is necessary to seek medical treatment in time.