[Sexual dysfunction after curietherapy and external radiotherapy of the prostate for localized prostate cancer]

Knowing the importance of sexuality items in the choice by the patient of the modality of treatment of localized prostate cancer, we aimed at reviewing and updating the effects of prostate radiotherapy and brachytherapy on sexual functions.

A PubMed search was done using the keywords: prostate cancer, erectile dysfunction, radiotherapy, brachytherapy, ejaculation and orgasm.

After both radiotherapy and brachytherapy, sexual troubles occur progressively, the onset of occurrence of erectile dysfunction being 12-18 months after both treatments. Even though the pathophysiological pathways by which radiotherapy and brachytherapy result in erectile dysfunction have not yet been fully clarified, arterial damage and exposure of neurovascular bundle to high levels of radiation seem to be two main causes of erectile dysfunction after radiotherapy and brachytherapy. The radiation dose received by the corpora cavernosa at the crurae of the penis may also be important in the etiology of erectile dysfunction. Another important factor following radiotherapy is the treatment modality. Not many data about ejaculation and orgasm after radiation treatments have been published yet. Recent data show that most of the population treated by brachytherapy conserves ejaculation and orgasm after treatment, even if a majority describe reduction of volume and deterioration of orgasm. Patients need to be correctly informed on the possible sequela of radiotherapy and brachytherapy on their sexual well-being while planning their treatment. Patients should also be informed about the possible treatment modalities for erectile dysfunction.