Chemotherapy, surgery and radiation therapy have side effects and definite risks. Surgery has a risk of infection or injury of healthy tissues. After surgery a rehabilitation specialist must give a course of the after treatment.
Chemotherapy includes strong medication, which can kill normal cells together with injured. Special nutrition must be used when chemotherapy is over. Hair and blood suffer the first.
Radiation therapy brings loss of appetite, fatigue and damage to the surrounding skin.
In close future doctors will use gene-therapy as the safest treatment.