British scientists from the Peninsula Medical School in Cornwall developed a modified photodynamic therapy (PDT) treatment and made a breakthrough in cancer treatment. The new treatment destroys cancer cells without harming the surrounding tissue.

Photodynamic therapy is an effective non-surgical treatment for some types of dermatological cancers and pre-cancers without scarring or damaging the surrounding healthy cells.

This is the first time the scientists have managed to effectively treat a very common form of skin cancer, thicker nodular basal cell carcinomas with a single PDT treatment.

They added iron chelator CP94 to the cream and found that the effects of PDT greatly improved and achieved greater reductions in tumour depth in tumours currently too thick to be treated easily by the non-enhanced form of this treatment.

Patients who had already undergone this treatment say that it is much less unpleasant and seems to be more effective. It also treats quite a big area in one go, which means fewer treatments in the long run.

It has also been found that with photodynamic therapy, melanomas do not return as frequently and, even if they do, they are far less severe.