 Good day to all of you. I am Dr. Gunjan Bajal, a radiation oncologist. A radiation oncologist is basically a doctor who takes care of cancer patients and tries to treat cancer by the use of high-powered x-rays called radiation. So with this technique, very often we need to give radiation before, after or along with other modalities like chemotherapy or surgery. However, as our machines have grown and become more advanced, now we are confidently able to say that using radiation, we can very often cure a large percentage of early and locally advanced tumors. With this, we bring to the table the prospect of organ conservation. This means that suppose you had a tumor of the voice box. Now this, if you were to treat surgically and remove the voice box, you would probably not be able to speak with your original voice at all. But with the use of radiation, these cancer cells can be totally destroyed and you can achieve a cure in a very high percentage of cases, thereby alleviating the need for surgery. And also, after the treatment, you may be able to use your voice to the fullest extent almost as good as it was before. This is called organ conservation, whereby we try to improve your quality of life, not only by curing the cancer, but also by the reduction of side effects and the imparting of function to your body, which would have otherwise been taken away. This same principle of organ conservation can be used for prostate cancer, whereby radiation is used to treat prostate cancer along with hormone therapy without any kind of surgery being required. This is also possible for the cancers of the mouth of the uterus or the cervix, where radiation has now become the standard of care all around the world. In other head and neck cancers, like in the cancers of the tongue, the base of the tongue especially, the tonsils, the pharyngeal pathway, the esophagus, that is the food pipe through which the food flows. Even in early stage lung cancer, very often radiation in the form of stereotactic body radiotherapy is used to completely cure the patients, giving a good cure rate of about 50 to 60 percent, which is very high compared to the older treatment survival rates. So, this message I would like to pass on to you. But having said this, I would always say in spite of our advances in technology, the best way to treat and cure cancer is to try to detect them early so that the morbidity of the treatment and the cure rates can be much, much, much better.