Introduction: Intracranial mirror aneurysm is one of the subspecies of multiple intracranial aneurysms. The clear consensus on the treatment of mirror aneurysms has not come into existence. We investigated the preoperative value for radiographic data of Posterior Communicating artery (PComA) mirror aneurysms in operation choosing.
Materials and Methods: We retrospectively reviewed patients with PComA mirror aneurysms treated with clipping from December 1997 to April 2019. The PComA mirror aneurysms were confirmed by computed tomographic angiography or digital substraction angiography and PComA mirror aneurysms patients with other aneurysms complicated were excluded. Patients’ radiographic data, general clinical data and Modified Rankin Score were analysed by R 4.1.2.
Results: 33 PComA mirror aneurysm patients were analysed. Mirror aneurysms were clipped by one-stage unilateral craniotomy approach in 10 of 33. There was one factor that was statistically significant. In patients accepted unilateral approach, the size of silence aneurysm tended to be in the range of 5.1mm to 10mm
Discussion: The size of silent aneurysm performs as an indicator for neuro- surgeon in choosing management strategy of mirror aneurysms. Thus it is helpful to measure the size of silence aneurysm before operation.