PMC9875060_01
(A) Preoperative head magnetic resonance imaging of the patient. (B) Under the endoscope, the arachnoid was explored along the outer and upper margins of the cerebellum and subsequently cut to fully expose the trigeminal nerve. (C) At first, no obvious offending vessels were found. (D) After careful exploration, we found the offending small vein and arachnoid adhesions. (E) The petrosal vein branch and trigeminal nerve were clearly visible under the endoscopic view. (F) The Teflon pad was placed between the trigeminal nerve and the petrosal vein branch under the endoscopic view. The red circle indicates that the trigeminal nerve was compressed by the petrosal vein branch, the purple arrow indicates the brainstem, the orange arrow indicates petrosal vein, the red arrow indicates the petrosal vein branch, the blue arrow indicates the trigeminal nerve, the green arrow indicates the facial nerve, and the yellow arrow indicates the Teflon pad.
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F1
The preoperative cranial MRI indicated that the right trigeminal nerve was compressed by small vessels (Figure 1A).
PMC9875060_02
(A) Preoperative head magnetic resonance imaging of the patient. (B) A small artery, a vein that spanned the right trigeminal nerve, and the trigeminal nerve were clearly visible under the endoscopic view. (C) The Teflon pad was placed between the trigeminal nerve and the offending vessels under the endoscopic view. The red circle indicates trigeminal nerve compression by the offending vessels, the red arrow indicates the offending vessels, the blue arrow indicates the trigeminal nerve, and the yellow arrow indicates the Teflon pad.
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F2
Preoperative cranial MRI showed that the right trigeminal nerve was compressed by blood vessels (Figure 2A).
PMC9875060_03
(A) Preoperative head magnetic resonance imaging of the patient. (B) The trigeminal nerve and the anterior cerebellar artery were clearly visible under the endoscopic view. (C) The Teflon pad was placed between the trigeminal nerve and the anterior cerebellar artery under the endoscopic view. The red circle indicates that the trigeminal nerve was compressed by the anterior cerebellar artery, the red arrow indicates the anterior cerebellar artery, the blue arrow indicates the trigeminal nerve, and the yellow arrow indicates the Teflon pad.
fneur-13-1090478-g0003.jpg
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F3
Preoperative cranial MRI showed that the left trigeminal nerve was compressed by blood vessels (Figure 3A).