Mine is also 4.4cm. After a gene study, I have the LOX defect. Hard to find any info on it. It lacks the collagen and elasticity and causes aortic dissections. I feel fine, but can't help but be on your mind often. I think it makes one appreciate every moment of life. I turned 67 in June, and mom died from it at almost 67. I believe with the Connective Tissue Disease, I will meet with the surgeons in about 6 months. We should stay in contact! My sis and daughter also have the gene defect.