GIANT BENIGN SCHWANNOMA OF THE ANTERIOR BASE OF THE SKULL WITH SINONASAL AND PHARYNGEAL EXTENSION

Abstract

Introduction: Schwannomas are tumors developed from Schwann cells present in the peripheral nerve sheaths. Their development both extra and intracranial is extremely rare. Observation: We report the case of a 36-year-old man who consulted for sinonasal syndrome evolving over the past ten years in which explorations found a large benign schwannoma of the anterior base of the skull with sinonasal and pharyngeal extension. The excision was performed externally by Moure and Sébileau with ENT and neurosurgery collaboration. The suites were simple. Discussion: The present observation again raises the question of the exact origin of developing sinonasal and endocranial schwannomas. The origin of the lesion and our management conditions were discussed. Conclusion: as for other authors, schwannoma should be considered in the diagnosis of skull base tumors. External surgery for extensive forms and ENT and neurosurgery collaboration help to minimize the risk of complications. Keywords: schwannoma; sinonasal schwannoma; skull base tumor.