Related Experiment Video
Updated: Jul 17, 2026

Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery
Published on: July 5, 2021
Meningioma of the paranasal sinus: a case report
Kazuyuki Kainuma1, Yutaka Takumi, Takeshi Uehara
1Department of Otolaryngology, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto 390-8621, Japan. kazuyuki@hsp.md.shinshu-u.ac.jp
Abstract:
Extracranial meningioma of the paranasal sinus is a very rare condition of unclear etiology. Surgical excision is currently the only curative treatment but sometimes entails difficulties because of the complicated anatomic loci of the tumor. For the case reported here, we used a navigation system in endoscopic surgery for an extracranial meningioma of the paranasal sinus and were able to remove the tumor without complications by a transnasal approach alone. This is the first report of the use of such a system with endoscopic surgery for this condition. We discuss the clinical presentation, diagnosis, and treatment of this case as well as present a review of the literature.
Insights
Extracranial meningiomas in the paranasal sinus are rare. Navigation-assisted endoscopic surgery via a transnasal approach offers a safe and effective treatment option for these challenging tumors.
Area of Science:
- Neurosurgery
- Otolaryngology
- Oncology
Background:
- Extracranial meningiomas of the paranasal sinus are exceptionally rare tumors with an unknown cause.
- Complete surgical resection is the primary curative treatment, but anatomical challenges can complicate procedures.
Observation:
- A case of extracranial meningioma involving the paranasal sinus was treated.
- The surgical team utilized a navigation system within endoscopic surgery for tumor removal.
Findings:
- The tumor was successfully excised using solely a transnasal endoscopic approach.
- The procedure was completed without any complications, highlighting the efficacy of the technique.
Implications:
- This represents the first documented use of a navigation system in endoscopic surgery for paranasal sinus meningiomas.
- The findings suggest that navigation-assisted endoscopic surgery is a viable and safe approach for treating these rare tumors.
Related Concept Videos
Bacterial Meningitis I: Introduction
Cryptococcal Meningitis
Viral Meningitis
Bacterial Meningitis
Bacterial Meningitis II: Pathophysiology
Brain Abscess l: Introduction
