Fig. 3

a A 25-year-old male patient (→ showing the following imaging features) altered signal intensity seen in left middle ear cavity, petrous apex and mastoid cavity extending into the cavernous sinus and left orbital apex causing mass effect on the left ICA and altered signal intensity appearing hyperintense on FLAIR sequence in left temporal bone, clivus and sphenoid bone. b A 25-year-old male patient (→ showing the following imaging features) homogeneous enhancement of left middle ear cavity, petrous apex and mastoid cavity extending into the cavernous sinus and left orbital apex and heterogenous enhancement of left temporal bone, clivus and sphenoid bone. Significant pachymeningeal enhancement in the suprasellar, pre-pontine cistern, along the internal acoustic meatus and temporal regions on left side. c A 25-year-old male patient. CISS sequence (→ showing the following imaging features) thickened and edematous left trigeminal and abducens nerves at the entry points into the Meckel’s cave and Dorello’s canal