Clin Endosc.  2015 Mar;48(2):171-173. 10.5946/ce.2015.48.2.171.

Peripheral Facial Nerve Palsy after Therapeutic Endoscopy

• Kim EJ
• Lee J
• Lee JW
• Lee JH
• Park CJ
• Kim YD
• Lee HJ

• KMID: 1801210
• DOI: http://doi.org/10.5946/ce.2015.48.2.171

Abstract

Peripheral facial nerve palsy (FNP) is a mononeuropathy that affects the peripheral part of the facial nerve. Primary causes of peripheral FNP remain largely unknown, but detectable causes include systemic infections (viral and others), trauma, ischemia, tumor, and extrinsic compression. Peripheral FNP in relation to extrinsic compression has rarely been described in case reports. Here, we report a case of a 71-year-old man who was diagnosed with peripheral FNP following endoscopic submucosal dissection. This case is the first report of the development of peripheral FNP in a patient undergoing therapeutic endoscopy. We emphasize the fact that physicians should be attentive to the development of peripheral FNP following therapeutic endoscopy.

Keyword

Facial paralysis; Compression; Endoscopy

MeSH Terms

Aged
Endoscopy*
Facial Nerve*
Facial Paralysis
Humans
Ischemia
Mononeuropathies
Paralysis*

Figure

• 

  Fig. 1 The patient is in the left lateral decubitus position on the hard pillow during endoscopic submucosal dissection. The mouthpiece is fixed with a rubber band. The left facial nerve may be compressed by the hard pillow or mouthpiece band.

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  Fig. 2 Patient showing left side peripheral facial nerve palsy with inability to wrinkle the forehead, eyebrow sagging, disappearance of the nasolabial fold, and drooling at the left corner of the mouth.

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  Fig. 3 Blink reflex test. Ipsilateral R1 and R2 were absent upon left-side stimulation, whereas contralateral R2 was present. Ipsilateral R1 and R2 were present upon right-side stimulation, whereas contralateral R2 was absent. These findings are consistent with peripheral facial nerve palsy. (A) Left-side stimulation. (B) Right-side stimulation.

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