An apparatus and a method is disclosed comprising one or more treatment chambers that may treat the blood of a patient in a minimally invasive way outside of the patient's body. Inside the chamber, the blood may be treated with heat, drugs, mechanical waves, electromagnetic waves, and material beams. In order to further minimize the side effect of treatments, the blood may first be separated into blood components. The treatments may then be applied only to those blood components that actually contain abnormal and cancerous cells that need to be killed.