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MRI of Glossopharyngeal Neuralgia Caused by Neurovascular Compression

Akio Hiwatashi1, Toshio Matsushima2, Takashi Yoshiura1, Atsuo Tanaka3, Tomoyuki Noguchi1, Osamu Togao1, Koji Yamashita1 and Hiroshi Honda1

1 Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
2 Department of Neurosurgery, Hamanomachi Hospital, Fukuoka, Japan.
3 Department of Radiology, Hamanomachi Hospital, Fukuoka, Japan.


Figure 1
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  		Fig. 1A —71-year-old woman with right pharyngeal pain. Coronal 3D constructive interference in steady state (CISS) image reveals right posterior inferior cerebellar artery (PICA, arrows) in contact with right glossopharyngeal nerve (large arrowhead) at supraolivary fossette (small arrowhead).

 

Figure 2
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  		Fig. 1B —71-year-old woman with right pharyngeal pain. Coronal 3D CISS image anterior to A reveals course of right PICA (arrow), right glossopharyngeal nerve (large arrowhead), and location of supraolivary fossette (small arrowhead).

 

Figure 3
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  		Fig. 1C —71-year-old woman with right pharyngeal pain. Coronal 3D CISS image on left (asymptomatic) side reveals left glossopharyngeal nerve (large arrowheads) at supraolivary fossette (small arrowhead). No vessel is in contact with this nerve at this location.

 

Figure 4
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  		Fig. 1D —71-year-old woman with right pharyngeal pain. Axial 3D CISS image reveals right glossopharyngeal nerve (large arrowhead) in contact with loop formed by right PICA (arrows) at supraolivary fossette. On left side, note PICA (arrow) that does not compress left glossopharyngeal nerve (small arrowhead).

 

Figure 5
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  		Fig. 1E —71-year-old woman with right pharyngeal pain. Axial 3D CISS image inferior to D reveals course of right glossopharyngeal nerve (small arrowhead) in contact with loop formed by right PICA (arrows). Normal left glossopharyngeal nerve (large arrowheads) is also seen.

 

Figure 6
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  		Fig. 2 —67-year-old man with pain on left side of tongue. Three-dimensional CISS image reveals left anterior inferior cerebellar artery (AICA, arrow) near left glossopharyngeal nerve (large arrowhead). No abnormal vessel is seen near right glossopharyngeal nerve (small arrowhead).

 

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