M36: Systemic disorders of connective tissue in diseases classified elsewhere

M36.1: Arthropathy in neoplastic disease

You have a tumor disorder. The tissue in the body is made up of cells. A tumor disorder involves the cells multiplying more than normal. This results in abnormal or excess tissue forming. A tumor can be benign or malignant.

With tumor disorders, the body’s metabolism may be changed. The tumor can produce substances that damage the joints. The defense system also responds to a tumor disorder. For example, the defense system produces antibodies against the tumor. These antibodies can also attack other tissues in the body, such as the joints.

Joint disorder can cause you to have pain in your joints.