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Updated: Jan 3, 2026

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Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery
Published on: July 5, 2021
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Large Sinonasal Schwannoma with Skull Base Defect: A Case Report
Nitya Subramanian1,2, Neha Sood1, W V B S Ramalingam1
11Department of ENT and Head and Neck Surgery, B.L.K Super Speciality Hospital, New Delhi, 110060 India.
Summary
Unilateral sinonasal masses can be challenging. This case highlights nasoethmoidal schwannoma, a rare tumor, emphasizing its consideration in unilateral nasal mass diagnosis and management.
Area of Science:
- Otolaryngology
- Neurosurgery
- Pathology
Background:
- Unilateral sinonasal masses represent 6% of paranasal sinus pathologies.
- Schwannomas are rare tumors that can occur in the sinonasal tract.
- Large skull base defects pose significant surgical challenges.
Purpose of the Study:
- To report a rare case of nasoethmoidal schwannoma with a large skull base defect.
- To highlight diagnostic and management challenges associated with this condition.
- To emphasize the importance of considering schwannoma in the differential diagnosis of unilateral sinonasal masses.
Main Methods:
- Endoscopic surgical removal of the nasoethmoidal schwannoma.
- Endoscopic repair of the associated large skull base defect.
- Review of diagnostic imaging and histopathological findings.
Main Results:
- Successful endoscopic resection of the nasoethmoidal schwannoma.
- Complete repair of the large skull base defect.
- Histopathological confirmation of schwannoma.
Conclusions:
- Nasoethmoidal schwannoma is a rare but important differential diagnosis for unilateral sinonasal masses.
- Endoscopic techniques allow for minimally invasive resection and repair of complex skull base defects.
- Multidisciplinary collaboration is crucial for optimal patient outcomes.

