137873.fig.004a
(a)
137873.fig.004b
(b)
Figure 4: Photomicrographs of a lateral wall type aneurysm. Hematoxylin and eosin staining. (a) Pathological findings 2 weeks after the embolization showing partial organization. (b) Pathological findings 4 weeks after the embolization showing organization of the whole aneurysm.