Fig. 10.6 Debulking of
the tumor can be
performed using sharp
dissection. An ultrasonic
aspirator may also be
used, but this must be
done with caution to
avoid damage to the
surrounding structures
Fig. 10.7 With
progressive debulking,
portions of the tumor
can be pushed away
from the surrounding
structures and removed
Fig. 10.8 Adequate visualization provided by the exposure allows bipolaring of the dural base following tumor resec-
tion, yielding a Simpson Grade 2