Is there a role for radiation therapy in the management of unresectable solid papillary cystic tumor of the pancreas?  

Actually, as it happens, I am currently treating a large solid pseudopapillary neoplasm of the pancreas. It happens to be the first I have ever treated. You are correct. I could find 1 case report from the 1980s where 2D radiation was used and the treatment was "effective". When I presented the case...

I have treated a very large unresectable serous cystadenoma of the pancreas with 5 fraction SBRT (dose painted). The goal is to shrink mass/prevent further growth while minimizing toxicity. The patient has had a satisfactory clinical and radiographic response so far (still early post-treatment but t...