Fig 4.

Images from the case of a 62-year-old man with subarachnoid hemorrhage (case 2).

A, Right pre-embolization vertebral angiography shows 4-mm left basilar artery-superior cerebellar artery aneurysm.

B, After embolization by GDC (3 mm × 4 cm and 2 mm × 4 cm), almost total obliteration was achieved.

C, Gross examination shows thin membrane on coils at orifice of aneurysm. The thin fragile covering bridges the whole space across the coils at the orifice.

D, Scanning electron microscopy shows neointima partially covering the coils (GDC-10 soft). A cobblestone pattern can be seen (original magnification, ×370; bar = 100 μm).