This study explores how **Stereotactic Body Radiation Therapy (SBRT)** might help people with a specific type of pancreatic cancer that has returned. Pancreatic ductal adenocarcinoma (PDAC) is a serious cancer, and sometimes even after surgery, it can come back in the same area. Right now, doctors usually use chemotherapy to help, but that doesn't always work well. **SBRT** is a special kind of radiation treatment that can target the cancer more precisely and safely. This study wants to see if adding SBRT to the usual care can help people live longer and feel better.

• **Participation** requires being part of the PACAP group and having specific conditions after surgery.
• **Treatment** involves five sessions of SBRT along with standard care.
• **Study Duration**: Monitoring includes checking survival, quality of life, and treatment effects.