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Red light that fights skin cancer

A therapy which can cure skin cancer by blasting it with red light is to be made available on the Health Service.

Hospital trials show the treatment destroys more than 90 per cent of even the most aggressive tumours.

Doctors say it is virtually pain-free and quick, with patients recovering within two or three weeks.

It also leaves little scarring, making it an attractive alternative to surgery, particularly for those with lesions on the face.

Skin cancer is now the most commonly diagnosed cancer in the UK. Its incidence has doubled in the last 20 years.

Experts say the problem is growing because Britons fail to take precautions in the sun. The light - or photodynamic - therapy follows a simple procedure.

A cream is applied to the affected area and left for about three hours to allow a drug called Metvix to penetrate the cancerous tissue.

It is then exposed to red light for ten minutes - triggering a chemical reaction that experts describe as a 'small atomic bomb' which destroys the cancer cells.

A trial of more than 100 patients with the most common form of cancer suggested the treatment was just as effective as surgery.

Dr Lesley Rhodes, a consultant dermatologist at the University of Manchester who led the trial, said: 'After three months, the complete response rate was 91 per cent. It's an important breakthrough.'

Initially, the outpatient treatment - which costs between £200 and £400 - will be carried out at Health Service hospitals in London, Portsmouth, Dundee, Harrogate, Newport, Truro and Wolverhampton.

It can be used on the two most common skin cancers - basal cell carcinoma and actinic keratoses which can lead to squamous cell carcinoma.

Although a small number of patients feel itching or tingling sensations, the process is largely pain free.

Healthy skin cells are not affected because they have not absorbed large amounts of the drug. As it dies, the cancerous lesion forms a crust, which falls off five to ten days later.

Professor Richard Groves, consultant dermatologist at Chelsea and Westminster Hospital, said: ' Generally, treatments for skin cancer involve indiscriminate skin destruction in the affected area. This selectively targets and destroys the cancerous cells, leaving healthy skin unaffected.

'Healing is usually within two to three weeks and with minimal scarring, extremely good cosmetic results and high patient satisfaction compared to traditional surgery.'