Meningiomas are often found in the atrium, they appear homogenous with well-demarcated borders and dural tails. They are hyperintense on T2 weighted images like the one above. Often by: https://www.instagram.com/p/CYZW-YjjKzP/?utm_medium=copy_link
Source: https://www.instagram.com/p/CYZW-YjjKzP/?utm_medium=copy_link