A, Lower-power view of H&E staining section of 1-year platinum coil embolized aneurysm, showing the localized formed bone and marrow within the aneurysm dome (arrow); (H&E, original magnification = ×15).
B, Higher-power view of formed bone in A, showing the bony trabeculae (short arrow) and bone marrow (long arrow), which contains various types of blood elements and blood sinusoids (H&E, original magnification = ×100).