Neurosurgical management of posterior communicating artery aneurysmal perforators

Abstract

Background: Posterior communicating artery (PCom) aneurysms are prevalent intracranial aneurysms, frequently leading to subarachnoid haemorrhage and third nerve palsy. "True" perforators originating directly from the PCom aneurysmal sac are rare and pose unique surgical challenges. We present two illustrative cases where "true" PCom perforators were identified during surgery, necessitating tailored microsurgical approaches. Case Reports: In case one, a 35-year-old female presented with a large PCom aneurysm. During surgery, a modified clipping technique successfully preserved a perforator originating from the aneurysmal sac. In case two, a 36-year-old male with a PCom aneurysm was found to have a perforator supplying the mesial temporal cortex. Sacrificing this perforator was necessary for aneurysm clipping. Conclusion: This paper underscores the rarity of "true" PCom perforators and their impact on microsurgical approaches. Preoperative imaging techniques often fail to detect these small-calibre vessels, highlighting the importance of intraoperative identification. Tailored approaches based on individual anatomy and clinical context are essential. While endovascular procedures provide alternatives, adaptability in microsurgical techniques remains crucial for cases requiring intraoperative perforator management. Overall, understanding the complex vascular intricacies of PCom aneurysms, including "true" perforators, is vital for neurosurgeons. The delicate balance between preservation and necessity, along with ongoing research for improved preoperative identification, stands as the cornerstone for enhancing surgical outcomes in these complex cases.

Keywords

• true perforators
• microsurgical clipping
• posterior communicating artery aneurysms