Spongiform hemangioma is a more serious condition. Spongiform hemangioma is not a tumor, but a more serious vascular malformation. Since this type of vascular mass is sponge-like with very many holes, it is not conducive to the stability of blood flow. Under triggering factors such as trauma and emotional excitement, intracranial spongiform hemangioma is likely to rupture and bleed, resulting in cerebral hemorrhage. Large cerebral hemorrhage may cause intracranial pressure to rise, leading to brain herniation, respiratory arrest and death, especially for cavernous hemangiomas in the brain stem, which may lead to coma, paralysis and even death even if the bleeding is minimal. Intracranial cavernous hemangiomas may also cause patients to develop epilepsy, and seizures can lead to prolonged ischemia and hypoxia of brain tissue and even death. Once a cavernous hemangioma develops, it is important to have regular checkups at the vascular surgery department, and when the development is larger and more serious, surgical resection should be performed promptly.