The SUAVe study is a Japanese multicenter study that investigated the natural history of aneurysms <5 mm and was published in 2010[^1].
Authors' conclusion
The annual rupture rate associated with small unruptured aneurysms is quite low. Careful attention should be paid to the treatment indications for single-type unruptured aneurysms <5 mm. If the patient is <50 years of age, has hypertension, and multiple aneurysms with diameters of ≥4 mm, treatment should be considered to prevent future aneurysmal rupture[^1].
References