"Its original diameter might have been very small, which the patient hadn't had checked with a brain vascular exam before, so we're unclear," Xie Wanying said. "However, Senior Cao, using his hands, sensed an abnormal fluctuation at its opening. The anterior choroidal artery has several branches. Senior Cao, utilizing his skill, pinpointed the problematic branch. Once the catheter was inserted, it was further confirmed that its diameter was abnormal and enlarged. Whether it was an aneurysm is difficult to say, but Senior Cao decided to embolize it, yielding immediate results. Post-examination showed that it didn't affect the blood supply to other brain tissues. It indicates that Senior Cao was very confident about its compensating collateral branches, something the Chief Surgeon had somewhat anticipated and estimated pre-surgery."
