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Excision of tumors in the parapharyngeal space using an endoscopically assisted transoral approach: a case series and literature review

OBJECTIVE: Magnetic resonance imaging (MRI) provides important information regarding tumors in the parapharyngeal space (PPS), revealing their origin, whether they are benign or malignant, and their relationships with surrounding structures. METHODS: Twelve tumors in the PPS were completely excised...

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Autores principales: Chen, Zhe, Chen, Ya-Lian, Yu, Qi, Zhou, Shui-Hong, Bao, Yang-Yang, Shang, De-sheng, Ruan, Ling-Xiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: SAGE Publications 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6421391/
https://www.ncbi.nlm.nih.gov/pubmed/30526171
http://dx.doi.org/10.1177/0300060518816190
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author Chen, Zhe
Chen, Ya-Lian
Yu, Qi
Zhou, Shui-Hong
Bao, Yang-Yang
Shang, De-sheng
Ruan, Ling-Xiang
author_facet Chen, Zhe
Chen, Ya-Lian
Yu, Qi
Zhou, Shui-Hong
Bao, Yang-Yang
Shang, De-sheng
Ruan, Ling-Xiang
author_sort Chen, Zhe
collection PubMed
description OBJECTIVE: Magnetic resonance imaging (MRI) provides important information regarding tumors in the parapharyngeal space (PPS), revealing their origin, whether they are benign or malignant, and their relationships with surrounding structures. METHODS: Twelve tumors in the PPS were completely excised using an endoscopically assisted transoral approach (EATA). The MRI features were analyzed. RESULTS: Ten pleomorphic adenomas confirmed on postoperative pathological examination had the parotid pedicle sign. A fat space between the tumor and parotid gland may distinguish such a tumor from a tumor arising from a minor salivary gland in the prestyloid space and a tumor arising from the deep lobe of the parotid gland. Both the jugular vein and carotid artery were displaced posteriorly in all 10 cases of pleomorphic adenomas. The principal features of the two schwannomas confirmed on postoperative pathological examination were separation of the internal carotid artery and internal jugular vein and anteromedial displacement of the internal carotid artery, suggesting that the tumors originated in the poststyloid space. In this review, 95 tumors were excised by the EATA in the English-language literature. CONCLUSIONS: MRI renders differential diagnosis possible. PPS tumors may be completely excised via an EATA guided by tumor features evident on preoperative MRI.
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spelling pubmed-64213912019-03-22 Excision of tumors in the parapharyngeal space using an endoscopically assisted transoral approach: a case series and literature review Chen, Zhe Chen, Ya-Lian Yu, Qi Zhou, Shui-Hong Bao, Yang-Yang Shang, De-sheng Ruan, Ling-Xiang J Int Med Res Clinical Research Reports OBJECTIVE: Magnetic resonance imaging (MRI) provides important information regarding tumors in the parapharyngeal space (PPS), revealing their origin, whether they are benign or malignant, and their relationships with surrounding structures. METHODS: Twelve tumors in the PPS were completely excised using an endoscopically assisted transoral approach (EATA). The MRI features were analyzed. RESULTS: Ten pleomorphic adenomas confirmed on postoperative pathological examination had the parotid pedicle sign. A fat space between the tumor and parotid gland may distinguish such a tumor from a tumor arising from a minor salivary gland in the prestyloid space and a tumor arising from the deep lobe of the parotid gland. Both the jugular vein and carotid artery were displaced posteriorly in all 10 cases of pleomorphic adenomas. The principal features of the two schwannomas confirmed on postoperative pathological examination were separation of the internal carotid artery and internal jugular vein and anteromedial displacement of the internal carotid artery, suggesting that the tumors originated in the poststyloid space. In this review, 95 tumors were excised by the EATA in the English-language literature. CONCLUSIONS: MRI renders differential diagnosis possible. PPS tumors may be completely excised via an EATA guided by tumor features evident on preoperative MRI. SAGE Publications 2019-03 /pmc/articles/PMC6421391/ /pubmed/30526171 http://dx.doi.org/10.1177/0300060518816190 Text en © The Author(s) 2018 http://creativecommons.org/licenses/by-nc/4.0/ Creative Commons Non Commercial CC BY-NC: This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).
spellingShingle Clinical Research Reports
Chen, Zhe
Chen, Ya-Lian
Yu, Qi
Zhou, Shui-Hong
Bao, Yang-Yang
Shang, De-sheng
Ruan, Ling-Xiang
Excision of tumors in the parapharyngeal space using an endoscopically assisted transoral approach: a case series and literature review
title Excision of tumors in the parapharyngeal space using an endoscopically assisted transoral approach: a case series and literature review
title_full Excision of tumors in the parapharyngeal space using an endoscopically assisted transoral approach: a case series and literature review
title_fullStr Excision of tumors in the parapharyngeal space using an endoscopically assisted transoral approach: a case series and literature review
title_full_unstemmed Excision of tumors in the parapharyngeal space using an endoscopically assisted transoral approach: a case series and literature review
title_short Excision of tumors in the parapharyngeal space using an endoscopically assisted transoral approach: a case series and literature review
title_sort excision of tumors in the parapharyngeal space using an endoscopically assisted transoral approach: a case series and literature review
topic Clinical Research Reports
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6421391/
https://www.ncbi.nlm.nih.gov/pubmed/30526171
http://dx.doi.org/10.1177/0300060518816190
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