The five-week course of treatment is part of a European clinical trial involving both PSI and University Hospital Zurich. Medical researchers are investigating whether
In most cases the treatment involves a combination of chemotherapy and radiation, followed by surgery to remove any tumor residue and the surrounding lymph nodes. Since the excision of the tumor also requires the removal of a part of the esophagus, the remaining healthy parts are subsequently connected with the stomach.
Both protons and photons can damage the DNA in tumor cells, killing them off. Although X-rays can be targeted at tumors with great precision nowadays, they also tend to affect the surrounding healthy tissue and may cause damage.
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