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Clip1:

Following  a pterional craniotomy, and the splitting of sylvian fissure the carotid bifurcation and the M1 are exposed.

A temporary clip is applied at the distal M1.

Clip2:

Further arachnoid dissection exposes the neck of the aneurysm; the neck is clipped and the temporary clip is removed

Clip3:

The dome of the giant aneurysm is opened, the thrombus is evacuated and aneurysectomy is carried out.