Severe Headache with Eye Involvement from Herpes Zoster Ophthalmicus, Trigeminal Tract, and Brainstem Nuclei

Figure 2

Axial MRI sections of the brainstem at the pontine level demonstrated fusiform enlargement of the fifth cranial nerve at the cisterna level on the T1-weighted images (a1). Postcontrast, fat-suppressed T1 images showed slight enhancement that is disclosed on cisterna level of the fifth cranial nerve (a2) and enlargement of the maxillary division of the fifth cranial nerve with slight enhancement while it passed foramen rotundum (a3). Also coronal MRI section at the level of the fifth cranial nerve showed slight enhancement (a4). Axial MRI sections showed brain stem at the level of facial and vestibulocochlear nerves in precontrast image (b1) and slight enhancement in postcontrast study (b2).