Spontaneous subarachnoid hemorrhage caused by ruptured aneurysm of basilar trunk perforator:a case report and literature review

Background:Aneurysm of basilar perforator was rarely reported in the literature.It is difficult to treat due to its small size and deep-seated location.Excessive treatment may cause complications that resulted from ischemic events of parent perforators.Therefore,it is important to make clinical strategy for such patients to improve the prognosis.Case presentation:One case,who presented as spontaneous subarachnoid hemorrhage,despite the negative result in computed tomography angiography firstly,was diagnosed angiographically as a ruptured aneurysm of the basilar perforator.A good clinical outcome of the case was achieved during the follow-up after conservative observation for 2 months,as well as the disappearance of previous lesion from angiography.Conclusions:Aneurysm located at perforator of basilar trunk was rare and difficult to treat.Conservative observation for certain cases with periodic angiography follow-up was considered in order to prevent the patients from potential iatrogenic effects.