Fig. 6

MRI findings in female patient, 36 years old, with chronic renal disease presented mainly with headache and altered mentation, in addition to Rt. eye proptosis, with periocular and eyelids edema, following COVID-19. A Axial T2 SPIR, B Axial post-contrast T1W images showed ethmoidal sinusitis (Asterisks), with extension of the inflammatory process to the Rt. orbit resulting in proptosis of Rt. eye globe, with posterior globe tenting (white arrow head), as well as Rt. periorbital and eyelids edema. There is retro-orbital fat stranding and heterogeneously enhancing soft tissue at the orbital apex (white arrows), that extend to the Rt. cavernous sinus. C Axial T2 WI showed extension of the inflammatory process to the Rt. basi-frontal lobe, exhibiting an area of abnormal signal intensities, that shows peripheral ring enhancement (red arrows) on axial post-contrast T1WI (D), presenting restricted diffusion on DW images at b-value 1000 (E) and apparent diffusion coefficient (ADC) map (F) in keeping with cerebral abscess. G Coronal post-contrast fat-saturated T1WI showing mild enlarged right cavernous sinus with patchy heterogeneous enhancement, with attenuated cavernous portion of the Rt. ICA (yellow arrows), associated with inflammatory spread to the Rt. infra-temporal fossa region (blue arrows)