Malignant schwannoma of the infratemporal fossa: a case report

Touati, Mohamed; Darouassi, Youssef; Chihani, Mehdi; Jalil, Abdelfettah Al; Tourabi, Khalid; Lakouichmi, Mohamed; Essâdi, Ismail; Bouaity, Brahim; Ammar, Haddou

doi:10.1186/s13256-015-0624-6

Cited by 6 publications

(6 citation statements)

References 12 publications

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“…They alone constitute 25-40% of head and neck tumors [2]. Several cases of extracranial ancient schwannoma have been reported in English literature [2][3][4][5]. However an ancient variant involving CPA is particularly rare and our case presentation is one of them.…”

Section: Introductionmentioning

confidence: 82%

An Unusual Variant of Cerebellopontine Angle Schwannoma in a Young Nepalese Girl

Kt¹,

Koirala²

2017

J Clin Exp Pathol

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An unusual variant of cerebellopontine angle schwannomas is extremely rare. Histologically, the tumor has atypical changes misleading the diagnosis. We report 20-year-old Nepalese girl from far-eastern community presented with features of raised intracranial pressure and difficulty in walking. MR imaging revealed intensely contrast enhanced well defined huge solid tumor in right cerebellopontine angle region with foci of multiple cystic components. The tumor was displacing the brain stem structures with dilatation of lateral and third ventricles. The altered radiological finding made discrepancy diagnosis. Conventional angiography demonstrated major feeders from the auricular branch of the right external carotid artery. The tumor was embolized with polyvinyl alcohol particles followed by gross total lateral suboccipital excision. Histopathology unit detailed it as ancient schwannoma with pleomorphic changes.

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Section: Introductionmentioning

confidence: 82%

An Unusual Variant of Cerebellopontine Angle Schwannoma in a Young Nepalese Girl

Kt¹,

Koirala²

2017

J Clin Exp Pathol

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“…Malignancies originating or extending into the infratemporal fossa, usually involve or destroy multiple neurovascular structures; thus, requiring complex and often tedious dissection. 9,10,28 Despite sparing the lateral nasal wall and the nasolacrimal duct, the restricted maneuverability space and inability to apply a four-handed technique are important limitations of a prelacrimal approach. 16 Moreover, given the fact that the prelacrimal corridor is established anterior to the inferior turbinate, employment of a posterior septectomy will add no benefit for a prelacrimal approach.…”

Section: Discussionmentioning

confidence: 99%

Endoscopic Endonasal Approach to the Pterygopalatine Fossa and Infratemporal Fossa: Comparison of the Prelacrimal and Denker’s Corridors

London

Prevedello

et al. 2022

Am J Rhinol�Allergy

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Background Both the endoscopic transnasal Denker’s and prelacrimal approaches provide surgical access to the pterygopalatine fossa (PPF) and infratemporal fossa (ITF). Objectives This study compares the potential maximum exposure of the PPF and ITF and quantifies the difference in surgical freedom via endoscopic Denker’s and prelacrimal approaches. Methods Six cadaveric specimens (12 sides) were dissected using a prelacrimal approach on one side and an endoscopic Denker’s approach on the contralateral side. The contents of the PPF and ITF were sequentially exposed. Surgical freedom for each corridor was subsequently calculated. Results This study confirms that both the prelacrimal and Denker’s approaches provide adequate exposure of the PPF and ITF. The maximum exposure boundaries were similar for both approaches, including the middle cranial fossa superiorly, floor of the maxillary sinus inferiorly, zygomatic arch and temporomandibular joint laterally, and post-styloid space posteriorly. However, the data revealed a statistically significant difference ( p < 0.05) regarding the surgical freedom of the prelacrimal (388.17 ± 32.86 mm2) and the endoscopic Denker’s approaches (906.35 ± 38.38 mm2). Conclusion When compared with an endoscopic Denker’s approach, a prelacrimal approach seems to achieve a similar extent of exposure (ie, visualization) of the PPF and ITF. Nonetheless, the endoscopic Denker’s approach offers superior surgical freedom; thus, it is preferred for the management of complex lesions which requires increased instrument maneuverability with a 3- or 4-handed technique.

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“…On note une légère prédominance masculine [1,4,6]. La localisation dans la fosse infratemporale est exceptionnelle ; dans la littérature on ne retrouve que des cas sporadiques [7].…”

Section: Discussionunclassified

Schwannome malin de la fosse infratemporale : à propos d’un cas et revue de la littérature

et al. 2015

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Reçu le 6 juillet 2015 ; accepté le 27 août 2015 © Lavoisier SAS 2015Résumé Le schwannome malin est une tumeur rare dévelop-pée aux dépens des cellules de Schwann des gaines nerveuses périphériques. La fosse infratemporale zone d'accès chirurgical difficile en est exceptionnellement le siège. Son diagnostic est posé à l'examen anatomopathologique. Le traitement repose sur une exérèse carcinologique de la tumeur associée ou non à une radio-ou chimiothérapie selon les équipes.Le pronostic est habituellement péjoratif en raison du risque de récidive, parfois difficile à diagnostiquer. Nous rapportons un cas rare de schwannome malin de la fosse infratemporale ayant bénéficié d'une exérèse chirurgicale par voie pré-auriculaire modifiée. A 6 mois de recul aucune récidive n'a été constatée. Mots clés Schwannome · Schwannome malin · Fosse infratemporaleAbstract Malignant schwannoma or malignant peripheral nerve sheath tumor is a rare tumor arises from Schwann cell of peripheral nerve sheath. The infratemporal fossa which is surgically difficult to access is an unusual location for this tumor. Pathological examination confirmed the diagnosis. Surgical procedure is the treatment with an oncologic resection of the tumor associated or not with adjuvant radiation or chemotherapy. The prognosis is usually pejorative because of the risk of recurrence, sometimes difficult to diagnose. We report a rare case of malignant schwannoma of the infratemporal fossa who underwent surgical resection by modified pre-auricular procedure. After follow-up of 6 months,no recurrence was observed.

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Malignant schwannoma of the infratemporal fossa: a case report

Cited by 6 publications

References 12 publications

An Unusual Variant of Cerebellopontine Angle Schwannoma in a Young Nepalese Girl

An Unusual Variant of Cerebellopontine Angle Schwannoma in a Young Nepalese Girl

Endoscopic Endonasal Approach to the Pterygopalatine Fossa and Infratemporal Fossa: Comparison of the Prelacrimal and Denker’s Corridors

Schwannome malin de la fosse infratemporale : à propos d’un cas et revue de la littérature

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