This is a comprehensive, clinically oriented review of all aspects of the complex and multidimensional problem of cancer pain. The unique characteristics of cancer pain, including pathophysiology, clinical assessment, diagnosis, and pharmacological and nonpharmacological management are all discussed here in detail. Internationally recognized leaders in cancer pain research have contributed to many new chapters, including neuraxial analgesia, hospice and institution-based palliative care programs, bone pain, and cancer pain and palliative care in the developing world.