MRI Evaluation--If any residual tumor is found during MRI evaluation, surgery can be resumed and the remaining cancerous tissue removed. Being able to reevaluate the patient's tumor with MRI during surgery allows neurosurgeons to operate with increased precision and will reduce the need for and risk of a second operation.

From Surgery into MRI--Patient is positioned for MRI evaluation.

Inside the Operating Room--The primary treatment of most pituitary tumors is by means of surgery.