yes

To answer to your question about curing with radiation, depending on the Loeb, multi lobby there, is it or is it not confined solely to the prostate and not any of the other lymphatics and its system. There are no Gastrointestinal issues and your problem? These are the type of questions that need to be answered or known before I can give you the complete answer correctly. Long and short is this: You die with not of prostate cancer. Just because it’s the rule doesn’t it make it the reason.

Yes. It can be cured with radiation therapy using new technology IMRT( intensity modulated radiation therapy)with IGRT( Image guided radiation therapy) With very high success rate and minimal morbidity.In patient with high grade ,high PSA and stage. Patient may need ADT ( hormonal injection) in additional to improve cure rate.

Prostate cancer, if treated before it metastasizes, can be cured by either surgery or radiation therapy. Radiation therapy is often combined with anti-androgen therapy.

This is a question for your urologist or oncologist since they are familiar with your case.

Radiation doesn't "cure" cancer. It helps the body to stop the growth of the cancerous cells so they will die off like they are supposed to. It is effective.