Presentation
Left facial numbness in a hypertensive patient.
Patient Data
Age: 50 years
Gender: Male
From the case:
Trigeminal schwannoma
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Well-circumscribed extra-axial dumble-shaped mass, extending along the course of the left trigeminal nerve (cisternal and cavernous portions). It displays a low signal on T1, a high signal on FLAIR, and T2 with no restricted diffusion on DWI or calcification/haemorrhagic component on the GE sequence. The postcontrast sequences show a heterogeneous enhancement. A moderate mass effect is noted on the pons and the left temporal lobe.
Small vessel ischaemic change is noted.
Case Discussion
MRI features of an enhancing soft tissue mass along the cisternal and cavernous portions of the trigeminal nerve most consistent with a trigeminal schwannoma.
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