As a result of a recent abdominal CT scan of my abdomen, results show that I also have a right rental cystic mass, which was first detected back in 2009. Percutaneous cryoblation of this right renal mass was performed at that time also. However, I recently learned that my right renal mass has increased from 4 centimeters to 4.6 centimeters. Is is a medical issues that requires immediate medical attention? I m also scheduled for iliac aortic aneurysm repair on Apr. 2, 15.