What occurs if the sac of an aneurysm keeps filling up?

When an aneurysm sac continues to fill with blood, the pressure on the walls of the aneurysm increases. This pressure can cause the weakened area of the blood vessel to expand further, making it increasingly susceptible to rupture. If the aneurysm bursts, it can lead to severe internal bleeding, which may be life-threatening. The risk of rupture and the consequent heavy bleeding are critical concerns associated with untreated or growing aneurysms. This progression underscores the importance of monitoring and, when necessary, treating aneurysms to prevent catastrophic outcomes.