<unk>  is a broad term describing conventional, alternative, and complementary treatments for cancer which have not been approved by a governing body (for instance, the United States Food and Drug Administration) as being effective.
Such therapies can be categorized broadly into three groups:
Unproven cancer therapy
Cancer medical therapy
Breast cancer treatment
Chronic liver disease medical therapy
Oral cancer medical therapy
Skin cancer surgery
Metastatic breast cancer treatment
Appendix cancer medical therapy