Aneurysms of 1mm usually do not require surgery, but they should be treated promptly with surgery when they occur in the brain or important large blood vessels.
An aneurysm is a limited abnormal dilation of an artery. Depending on the location, they can be categorized as peripheral aneurysms, intracranial aneurysms, visceral aneurysms, and abdominal aortic aneurysms. It is generally believed that small aneurysms found accidentally have a low risk of rupture and can be left untreated and followed up for observation.
If the aneurysm occurs in the brain, even small aneurysms have the risk of rupture and bleeding, which can cause serious consequences such as transient cerebral ischemia, hemiparesis, or death, and once detected, it should be treated promptly, and surgical treatment is often chosen to remove the aneurysm and reconstruct the artery. It is difficult to perform endoluminal treatment due to the small size of 1mm aneurysm.
If the aneurysm occurs in the carotid artery, the risk of rupture is higher due to the loose tissue around the carotid artery, and the hematoma formed by rupture and bleeding can rapidly compress the airway, causing asphyxiation and endangering the life, so it should be treated with timely surgery.
It is recommended that patients with 1mm aneurysm should seek medical attention in time and be actively treated under the guidance of doctors to avoid delaying the condition.