Fenestration of posterior cerebral artery at the junction of P1 and P2 segments

Fenestration of the posterior cerebral artery P1-P2 junction: A case report

“…1 and 2 ). To the best of our knowledge, only a few reports have demonstrated fenestrations at the P1-P2 junction [ 3 , 4 ]. In the MRI study described above, fenestration at the P1-P2 junction was observed in only 2 of 2350 (0.09%) patients [3] .…”

“…In the MRI study described above, fenestration at the P1-P2 junction was observed in only 2 of 2350 (0.09%) patients [3] . In the dissection study, only 1 case with fenestration at the P1-P2 junction was reported [4] . Therefore, fenestration at the PCA P1-P2 junction is extremely rare.…”

“…The P1 segment of the posterior cerebral artery (PCA) refers to the segment from the basilar artery bifurcation to its confluence with the posterior communicating artery (PCoA), and the P2 segment refers to the segment after confluence with the PCoA [2] . Fenestration is rare among anatomical variants in the PCA, and in particular, to our knowledge, there are only a few reports of fenestrations at the P1-P2 junction [ 3 , 4 ]. Herein, we report a case of fenestration at the PCA P1-P2 junction diagnosed by 3-T magnetic resonance imaging (MRI) and magnetic resonance angiography (MRA).…”