My Primary Doctor Has Determined With A Scan That The

My Primary doctor has determined with a scan that the aneurysm that I have has increased since last year and suggests seeing a surgeon for another opinion.
Appointment is tomorrow. Another Orthopedic doctor was about to give me a CT scan to locate the source of pain in my shoulder but stopped because of possible compromise of the dye used in the procedure due to a lack or over abundance of creatine.
Question #1 Can an Aortic aneurysm cause weakness in the lower extremities with periodic pain after walking a short distance?
Question #2 What diet can a person partake of in order to either increase or reduce creatine in my system and if there is either in my system will this interfere with any other tests that I may have to take?
Thanks in advance!
Question #2