Thanks for the follow up. My assumption was as you suggest, the number of chemo treatments is based on results of the scans and how the chemo is affecting the size and vascular entanglement with the tumor. My CT-Angiogram of two weeks ago showed a 3.1 cm diameter mass at the head of the pancreas (adenocarcinoma) and some limited involvement with the SMV (superior mesenteric vein). My second round of chemo is next week, so I'm about 6 weeks behind you. Sounds like we are in relatively good shape compared to many who find themselves with an unanticipated pancreatic cancer curve ball late in life. Also like you, I was diagnosed and initially treated at the Mayo Clinic in Rochester. This old guy (74) returned home to Alaska last week for the chemo to follow this summer, but I'll return to Rochester for radiation therapy if needed, and the Whipple procedure as well. May you (we) fare well in the months ahead. As for the Mayo Clinic.... I've run out of superlatives to describe the quality of care, teamwork and professionalism by everyone I encountered there.