PMC5175024_01
Cerebral diffusion MRI. (A) MRI venography. Left transverse sinus blood flow is not observed (arrow). (B) Blood flow is seen inside transverse sinuses (arrows). (C) Hyperintense lesions in the occipital region. (D) Normal cerebral MR image.
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F1
On cranial magnetic resonance (MR) venograms, no-flow phenomenon was observed within the left transverse sinus (Figure 1a, arrow). In fact contrast agent was not seen only on venograms obtained at that moment of observation. (Figure 1b, arrows). Lesions were reported as unrelated to the metastases of the primary disease, but consistent with PRES (Figure 1c). Control cranial MRI obtained three weeks later revealed disappearance of parenchymal lesions (Figure 1d).