Fig. 2.

A 57-year-old female with RCVS presenting with “thunderclap headache”. 2A-C: several small foci of gyriform reduced diffusion were noted in the parietooccipial cortices (arrows, 2A), but less prominent than the amount of edema on FLAIR (2B), indicative of concomitant PRES, with small amounts of subarachnoid hemorrhage on T2*WI as well (arrows, 2C); MRA (not shown) suggestive mild multifocal segmental narrowing. 2D: On catheter DSA of the right ICA, multifocal areas of narrowing of ACA and MCA segments are noted (arrows), with focal narrowing of the A2 (dotted arrow) and A1 (not shown) segments as well.