Extratemporal Malignant Nerve Sheath Tumor of Facial Nerve with Coexistent Intratemporal Neurofibroma Mimicking Malignant Intratemporal Extension

Extratemporal Malignant Nerve Sheath Tumor of Facial Nerve with Coexistent Intratemporal Neurofibroma Mimicking Malignant Intratemporal Extension

We present an extremely unusual case of an extratemporal facial nerve malignant peripheral nerve sheath tumor (MPNST) arising from preexistent intratemporal neurofibroma, illustrating a difficulty in discriminating between perineural spread of the MPNST and the preexistent intratemporal neurofibroma...

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Main Authors: Mitsuhiko Nakahira, Naoko Saito, Masashi Sugasawa
Format: Article
Language:English
Published: Hindawi Limited 2015-01-01
Series:Case Reports in Otolaryngology
Online Access:http://dx.doi.org/10.1155/2015/790941
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spelling doaj-f17e65f7fc294fc7b97f3f27de1285282020-11-24T22:42:55ZengHindawi LimitedCase Reports in Otolaryngology2090-67652090-67732015-01-01201510.1155/2015/790941790941Extratemporal Malignant Nerve Sheath Tumor of Facial Nerve with Coexistent Intratemporal Neurofibroma Mimicking Malignant Intratemporal ExtensionMitsuhiko Nakahira0Naoko Saito1Masashi Sugasawa2Department of Head and Neck Surgery, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama 350-1298, JapanDepartment of Radiology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama 350-1298, JapanDepartment of Head and Neck Surgery, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama 350-1298, JapanWe present an extremely unusual case of an extratemporal facial nerve malignant peripheral nerve sheath tumor (MPNST) arising from preexistent intratemporal neurofibroma, illustrating a difficulty in discriminating between perineural spread of the MPNST and the preexistent intratemporal neurofibroma on preoperative radiographic images. The most interesting point was that preoperative CT scan and MR images led to misinterpretation that MPNST extended proximally along the facial nerve canal. It is important to recognize that the intratemporal perineural spread of neurofibromas and MPNST share common imaging characteristics. This is the first report (to our knowledge) of these 2 lesions coexisting in the facial nerve, leading to misinterpretation on preoperative images.http://dx.doi.org/10.1155/2015/790941
collection DOAJ
language English
format Article
sources DOAJ
author Mitsuhiko Nakahira
Naoko Saito
Masashi Sugasawa
spellingShingle Mitsuhiko Nakahira
Naoko Saito
Masashi Sugasawa
Extratemporal Malignant Nerve Sheath Tumor of Facial Nerve with Coexistent Intratemporal Neurofibroma Mimicking Malignant Intratemporal Extension
Case Reports in Otolaryngology
author_facet Mitsuhiko Nakahira
Naoko Saito
Masashi Sugasawa
author_sort Mitsuhiko Nakahira
title Extratemporal Malignant Nerve Sheath Tumor of Facial Nerve with Coexistent Intratemporal Neurofibroma Mimicking Malignant Intratemporal Extension
title_short Extratemporal Malignant Nerve Sheath Tumor of Facial Nerve with Coexistent Intratemporal Neurofibroma Mimicking Malignant Intratemporal Extension
title_full Extratemporal Malignant Nerve Sheath Tumor of Facial Nerve with Coexistent Intratemporal Neurofibroma Mimicking Malignant Intratemporal Extension
title_fullStr Extratemporal Malignant Nerve Sheath Tumor of Facial Nerve with Coexistent Intratemporal Neurofibroma Mimicking Malignant Intratemporal Extension
title_full_unstemmed Extratemporal Malignant Nerve Sheath Tumor of Facial Nerve with Coexistent Intratemporal Neurofibroma Mimicking Malignant Intratemporal Extension
title_sort extratemporal malignant nerve sheath tumor of facial nerve with coexistent intratemporal neurofibroma mimicking malignant intratemporal extension
publisher Hindawi Limited
series Case Reports in Otolaryngology
issn 2090-6765
2090-6773
publishDate 2015-01-01
description We present an extremely unusual case of an extratemporal facial nerve malignant peripheral nerve sheath tumor (MPNST) arising from preexistent intratemporal neurofibroma, illustrating a difficulty in discriminating between perineural spread of the MPNST and the preexistent intratemporal neurofibroma on preoperative radiographic images. The most interesting point was that preoperative CT scan and MR images led to misinterpretation that MPNST extended proximally along the facial nerve canal. It is important to recognize that the intratemporal perineural spread of neurofibromas and MPNST share common imaging characteristics. This is the first report (to our knowledge) of these 2 lesions coexisting in the facial nerve, leading to misinterpretation on preoperative images.
url http://dx.doi.org/10.1155/2015/790941
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AT masashisugasawa extratemporalmalignantnervesheathtumoroffacialnervewithcoexistentintratemporalneurofibromamimickingmalignantintratemporalextension
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