TY - JOUR
T1 - Patulous Eustachian Tube and Otitis Media with Effusion as Complications after Trigeminal Nerve Injury
AU - Ikeda, Ryoukichi
AU - Kobayashi, Toshimitsu
AU - Yoshida, Masayuki
AU - Yoshida, Naohiro
AU - Kikuchi, Toshiaki
AU - Oshima, Takeshi
AU - Kawase, Tetsuaki
AU - Katori, Yukio
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant Number 15K20175 and the Project Promoting Clinical Trials for Development of New Drugs and Medical Devices (Japan Medical Association) from Japan Agency for Medical Research and development, AMED (CCT-A-2802).
Publisher Copyright:
© 2017 Otology & Neurotology, Inc.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2017/9/1
Y1 - 2017/9/1
N2 - Objectives: To describe three patients of patulous Eustachian tube (pET) after trigeminal nerve injury and to demonstrate for the first time their magnetic resonance imaging (MRI) findings to hypothesize the mechanism of the pET after trigeminal nerve injury. Patients: Three patients presented with autophony after trigeminal nerve injury caused by the removal of intracranial tumors. Main Outcome Measures: Clinical patient records, audiological data, and MRI. Results: Each patient initially developed transient otitis media with effusion (OME) within a few months after surgery and subsequently developed pET. The MRI of the three patients when they developed pET demonstrated atrophy and fat infiltration of the muscles innervated by the mandibular branch of the trigeminal nerve. Conclusion: All three patients transiently manifested OME before pET was diagnosed. Based on the MRI findings and anatomical considerations, this chronological transition from OME to pET was speculated as an initial motor paralysis of the tensor veli palatini muscle, followed by volume decrease of the muscles in the vicinity of the ET due to denervation atrophy and fat infiltration, which resulted in ET closing failure.
AB - Objectives: To describe three patients of patulous Eustachian tube (pET) after trigeminal nerve injury and to demonstrate for the first time their magnetic resonance imaging (MRI) findings to hypothesize the mechanism of the pET after trigeminal nerve injury. Patients: Three patients presented with autophony after trigeminal nerve injury caused by the removal of intracranial tumors. Main Outcome Measures: Clinical patient records, audiological data, and MRI. Results: Each patient initially developed transient otitis media with effusion (OME) within a few months after surgery and subsequently developed pET. The MRI of the three patients when they developed pET demonstrated atrophy and fat infiltration of the muscles innervated by the mandibular branch of the trigeminal nerve. Conclusion: All three patients transiently manifested OME before pET was diagnosed. Based on the MRI findings and anatomical considerations, this chronological transition from OME to pET was speculated as an initial motor paralysis of the tensor veli palatini muscle, followed by volume decrease of the muscles in the vicinity of the ET due to denervation atrophy and fat infiltration, which resulted in ET closing failure.
KW - Autophonia
KW - Intracranial tumor removal
KW - Mandibular nerve
KW - Masticator muscles
KW - Pterygoid muscles
KW - Tensor veli palatini muscle
UR - http://www.scopus.com/inward/record.url?scp=85023739467&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85023739467&partnerID=8YFLogxK
U2 - 10.1097/MAO.0000000000001492
DO - 10.1097/MAO.0000000000001492
M3 - Article
C2 - 28708793
AN - SCOPUS:85023739467
VL - 38
SP - 1125
EP - 1128
JO - American Journal of Otology
JF - American Journal of Otology
SN - 1531-7129
IS - 8
ER -