Fewer second cancers with proton radiotherapy: research

Findings from this large epidemiological study should be heeded, Harvard radiation oncologists say

Patients with cancer are less likely to develop another primary cancer if their radiotherapy is carried out with protons rather than photons, a large US study shows.

proton beam radiotherapy machine

But the absolute level of second primary cancers diagnoses is low, even with photon radiotherapy, at 1.55 per 100 patient-years, researchers say.

There is also nothing to choose between two widely used forms of photon radiotherapy (intensity-modulated radiotherapy and 3-dimensional