Fig 1. A, Lower-power view of H&E staining section of 3-month platinum coil embolized aneurysm, showing the mature bone formation near the neck area (arrow), (H&E, original magnification = x30).

B, Higher-power view of formed bone in A, showing the bony trabeculae (short arrow) and bone marrow (long arrow), which contains loose reticular tissue with blood elements, thin-walled vessels, stromal cells, and adipose cells (H&E, original magnification = x100).