Penile Cancer Treatment: Brachytherapy is a Better Option Than Surgery

by Madhumathi Palaniappan on  May 8, 2017 at 11:02 AM Cancer News
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Cancer of the penis in men could be treated with a type of radiotherapy called brachytherapy. The treatment may be a better option than surgery, finds a new study from the European Society for Radiotherapy and Oncology (ESTRO).
Penile Cancer Treatment: Brachytherapy is a Better Option Than Surgery
Penile Cancer Treatment: Brachytherapy is a Better Option Than Surgery

The study was presented at the ESTRO 36 conference and is important because penile cancer is extremely rare - less than one man in 100,000 is affected in developed countries, although there is a higher incidence in developing countries - and so it is difficult to gather enough evidence to show that one type of treatment is better than another.

The most frequent treatment is surgery to remove the glans (the tissue at the end of the penis), but this has an obvious impact on a man's sexual and urinary functioning.

Dr Alexandre Escande, a resident in radiation oncology at the Gustave Roussy Cancer Campus (Villejuif, France), and his colleagues examined the outcomes of 201 men, aged over 45, treated at their institution and followed up for several years until March 2016 (median average follow-up time was 10.7 years).

All the men were circumcised and then treated with brachytherapy, which involved inserting radioactive wires in or near the tumor; these emit radiation at a low dose rate for several days, delivering a total dose of between 36.5 and 76 Gy to kill the cancer cells.

Five years after treatment the probability of surviving with the penis intact was 85%, although 13 men (6%) had surgical treatment for toxic side effects of the treatment, such as painful ulcerations. The overall survival rate was 79% and the rate for surviving without the cancer recurring was 82%. Eight men (4%) had to have their penises removed by surgery and 18 men (13%) had partial surgery after their cancer returned.

Men who did less well and were more likely to suffer a recurrence of their cancer and to require further treatment, including surgery, were those whose cancer had started to metasize (spread) to the lymph nodes in the groin, who had tumors larger than 4cms in diameter, or who were treated with brachytherapy at a dose less than 62 Gy. Neutrophilia (a high white blood cell count) at the time of diagnosis was linked to a higher risk of metastasis.

Dr Escande told the conference: "These results show that brachytherapy is the treatment of choice for selected patients whose cancer has not spread into the sponge-like regions of the erectile tissue in the penis - the corpus cavernosum. It is effective at controlling and eradicating the cancer and allows a high number of men to preserve their penises.

"Another important finding was that if cancer did return, then this could often be dealt with successfully by a second round of brachytherapy or by surgery without the men being at higher risk of death from the disease. This suggests that brachytherapy is an adequate upfront, organ-sparing strategy, which is usually associated with only mild to moderate toxicities. Men still have a good body image, and also sexual and urinary function for the majority."

President of ESTRO, Professor Yolande Lievens, head of the department of radiation oncology at Ghent University Hospital, Belgium, said: "These are very encouraging results from an excellent study of a large group of men with a rare cancer who were followed up for a long period of time.

These findings further endorse the important role of radiotherapy -brachytherapy in this particular situation - in organ-sparing curative approaches to cancer. The use of brachytherapy in this very rare cancer type not only translated into high survival rates of men with this disease, but also ensured that the impact on their quality of life was kept to a minimum."



Source: Eurekalert

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