PCSK1N and atherosclerosis: Absolute risk factors for SAAs are not known, and possible risk factors for true and pseudoaneurysms vary.16 True SAAs are more frequent than pseudo SAAs; the main risk factors for true SAAs are hypertension, atherosclerosis (possibly due to hypertension), cirrhosis, portal hypertension (PHT), liver transplantation, female sex, pregnancy, and multiparity.7,13,14,22,70 Pregnancy and PHT are the most important factors.