What is a caverns in a brain MRI?

Caverns in a brain MRI refer to small, cystic spaces within the brain tissue that are typically filled with blood or fluid. These caverns may be indicative of vascular malformations, such as cavernous malformations or venous angiomas, which can lead to symptoms like headaches or seizures. They are usually identified incidentally during imaging and may require monitoring or treatment depending on their size and associated symptoms.