further , even in cases of aneurysm taking place on the cerebral main vessel in which the aneurysm must be extirpated despite the presence of an important branch shooting-off from the aneurysm , or in some other cases ( sphenoidal ridge meningioma , for instance ) in which total extirpation of the tumor must necessarily be associated with sacrifice of the main vessel because it is involved in the brain tumor , we think that the operation can be performed rather safely through anastomosis with the vessel to be sacrificed .
C0015250
total extirpation
C0543467
operation