FIG 7.

Patterns of perineural spread in 3 patients with COVID-19 associated Rhino-Orbital-Cerebral Mucormycosis. Patient 1: Post-contrast T1W coronal (A), axial (B) images demonstrate thickened and enhancing left mandibular nerve (arrow), left maxillary nerve (double headed arrow) and left trigeminal nerve (arrowhead). Patient 2: Postcontrast T1W axial (A), sagittal (B) images show thickening and enhancement of ophthalmic division (V1, dashed arrows) of right trigeminal nerve. Patient 3: Sagittal T2W image (E) shows hypointense nodular thickening along the optic nerve sheath which shows enhancement on sagittal post-contrast T1W image (F).