title: Progress in treating ruptured infundibular dilatation at the origin of the intracranial posterior communicating artery.
abstract: Infundibular dilatation (ID) can occur at the origin of the intracranial posterior communicating artery. When this type of widening is less than 3 mm in diameter and the ID reaches the posterior communicating artery, it can be called posterior communicating artery infundibular dilatation (Pcom-ID). Currently, Pcom-ID is considered a normal anatomic variation, and the majority of Pcom-IDs are stable. However, in some cases, rupture occurs in a Pcom-ID; furthermore, Pcom-IDs can evolve into aneurysms. There are not many studies on Pcom-ID rupture hemorrhage; therefore, we performed a retrospective evaluation of published studies on Pcom-ID rupture hemorrhage and conducted a classification analysis for this condition. It is reasonable to classify Pcom-ID into three types: Type 1, direct rupture of the Pcom-ID; Type 2, bleb rupture of Pcom-ID; and Type 3, Pcom-ID rupture caused by an aneurysm. This type of classification can provide meaningful guidance for treating ruptured Pcom-ID. In addition, the present study also included a systematic review and summarization of the literature on each type. This investigation was aimed to improve the understanding of Pcom-ID rupture hemorrhage.
authors.affiliation: Department of Neurosurgery, First Hospital of Jilin University Changchun 130021, China.
authors.forename: Jinlu
authors.initials: J
authors.lastname: Yu
authors.affiliation: Department of Neurosurgery, First Hospital of Jilin University Changchun 130021, China.
authors.forename: Baofeng
authors.initials: B
authors.lastname: Xu
authors.affiliation: Department of Radiology, First Hospital of Jilin University Changchun 130021, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Department of Radiology, First Hospital of Jilin University Changchun 130021, China.
authors.forename: Bing
authors.initials: B
authors.lastname: Xu
authors.affiliation: Department of Neurosurgery, First Hospital of Jilin University Changchun 130021, China.
authors.forename: Kan
authors.initials: K
authors.lastname: Xu
keywords: Infundibular dilatation; posterior communicating artery; rupture; treatment