Here we report, along with a review of the literature, our experience with a patient suffering from a cerebral aneurysm and developed volume overloading pulmonary edema during endovascular coiling. A 51-year-old female patient who had an aneurysm in the basilar artery tip and subarachnoid hemorrhage was scheduled for endovascular embolization under general anesthesia. She developed pulmonary edema during the procedure. Coiling failed so neurosurgeon performed aneurysmal clipping under general anesthesia. The massive intraarterial infusion and flushing with heparinized saline may have triggered the pulmonary edema. We monitored diuresis and hemodynamics following surgery, as a high degree of vigilance, including monitoring of arterial blood gas and electrolyte evaluation, of patients undergoing prolonged endovascular embolization and receiving many intra-arterial fluids may help recovery.