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J Neurol Surg B Skull Base 2022; 83(03): 296-304
DOI: 10.1055/s-0040-1722671
Original Article

Olfactory Outcomes after Resection of Tuberculum Sella and Planum Sphenoidale Meningiomas via a Transcranial Approach

Ronak Ved
1   Department of Neurosurgery, University Hospital of Wales, Heath Park, Cardiff, United Kingdom of Great Britain and Northern Ireland
2   School of Medicine, Cardiff University, Heath Park, Cardiff, United Kingdom of Great Britain and Northern Ireland
,
Matthew Mo
1   Department of Neurosurgery, University Hospital of Wales, Heath Park, Cardiff, United Kingdom of Great Britain and Northern Ireland
2   School of Medicine, Cardiff University, Heath Park, Cardiff, United Kingdom of Great Britain and Northern Ireland
,
Caroline Hayhurst
1   Department of Neurosurgery, University Hospital of Wales, Heath Park, Cardiff, United Kingdom of Great Britain and Northern Ireland
› Author Affiliations Funding None.
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Abstract

Objectives Controversy exists surrounding the optimal approaches to tuberculum sella meningioma (TSM) and planum meningioma (PM). Olfaction is infrequently considered within this context but is nonetheless an important quality of life measure. The evolution of olfactory outcomes following contemporary transcranial surgery remains unclear. This study reviews olfactory outcomes after supraorbital craniotomy for TSM or PM and defines temporal trends in its recovery.

Study Design A prospective study of a patients who underwent a minimally invasive supraorbital craniotomy for TSM or PM was conducted at a single neurosurgical center.

Participants & Main Outcome Measures All patients were questioned about olfaction at presentation 3 months postoperatively, 12 months postoperatively, and annually thereafter (median follow-up = 37 months). The olfactory status of patients was categorized as normosmia, anosmia, hyposmia, parosmia, (altered perception of odours), or phantosmia, (olfactory hallucinations).

Results Twenty-two patients were included in the study analysis, (range = 27–76). Precisely, 3 months after surgery, seven patients had normal olfaction (32%). Six patients were anosmic, (27%) four hyposmic, (18%), three parosmic, (14%), and two were phantosmic (9%). At 1-year follow-up, almost half of patients (10; 48%) were normosmic, while two patients (9.5%) were anosmic. There were no further improvements in olfaction between 1 year and long-term follow-up.

Conclusion Subfrontal transcranial approaches for TSM or PM appear to be associated with changes in olfaction that can improve with time; these improvements occur within the first year after surgery. Impacts upon olfaction should be considered when selecting a surgical approach and patients counseled appropriately.

Keywords

olfaction - tuberculum sella meningioma - supraorbital craniotomy

Note

The study was presented at the British Skull Base Society Meeting, (Poster) January 2020, London. This study was performed in accordance with the ethical standards of the Cardiff and Vale University Health Board Neurosciences directorate research and audit department, and with the 1964 Helsinki Declaration and its later amendments.


Informed consent was obtained from all individual participants included in the study.




Publication History

Received: 29 July 2020

Accepted: 01 November 2020

Article published online:
21 January 2021

© 2021. Thieme. All rights reserved.

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany

 

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