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Morphology of the lateral fossa of the brain (sylvian valley): anatomo-radiological aspects and surgical application

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Abstract

Introduction

The knowledge acquired on the lateral fossa of the brain (LFB) is heterogeneous and incomplete. Our goal was to provide a morphological description of the LFB and analyze the impact of these descriptions on the surgical approach of the region.

Methods

The morphology of LFB was studied on 40 cerebral hemispheres of 20 right-handed subjects aged 18–55 years with an MRI of 1.5 T. The anatomo-radiological identification of the two section levels preceded the description of the shapes of the LFB. From these landmarks, the forms presented by the LFB were identified and described on each of the transverse, sagittal and frontal planes. The comparison of the proportion of shapes made it possible to identify the typical shapes at each section level and on each section plane.

Results

The average age of the subjects was 33 years with extremes of 19 and 54 years including 7 women and 13 right-handed men. According to the plane and the level of section, 6 typical morphologies of the LFB have been described, 2 of which were identical. The forms did not vary according to the cerebral hemisphere or the sex of the subject. The set of typical morphologies made it possible to determine a reference subject called NSK which presented the greatest number of typical morphological characteristics.

Conclusion

Knowledge of LFB anatomical imaging is of paramount importance in the pre-surgical evaluation of pathologies in this region. The reference subject will be used for our future biometric and three-dimensional manual reconstruction work in this region.

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Acknowledgements

We thank all the staff of the Anatomy and Organogenesis laboratory of UCAD, the radiology department of CHNUF Fann, the ANCRE department of Paris Descartes-Sorbonne Paris Cité, for their availability and assistance. We also thank the Ministry of Higher Education, research and innovation of Senegal for its support through the PAPES (Project to support the Promotion of Researchers and Teachers of Senegal); Professor Sharon L. Juliano of IBRO for the correction of English and the officials of the Cooperation and Cultural Action Department of the French Embassy in Senegal who facilitated our second research visit to URDIA EA 4465.

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Authors and Affiliations

  1. Laboratory of Anatomy and Organogenesis, Faculty of Medicine, Pharmacy and Stomatology, Cheikh Anta Diop University, Post Box 5885, 10700, Dakar, Senegal

    Racky Wade, Aïnina Ndiaye, Magaye Gaye, Abdoulaye Ndiaye & Abdarahmane Dia

  2. Research Unit for the Development of Anatomy and Imaging (URDIA) EA 4465, Department of Numerical, Surgical, Radiological and Experimental Anatomy, Paris Descartes-Sorbonne Paris Cité University, Paris, France

    Racky Wade, Odile Plaisant & Alexis Guédon

  3. Diagnostic and Medical Imaging Center, Fann National University Hospital Center, Dakar, Senegal

    Abdoulaye Dione Diop & Sokhna Ba

  4. Laboratory of Anatomy and Organogenesis, UFR 2S, Gaston Berger University, Saint-Louis, Senegal

    Philippe Manyacka

Authors
  1. Racky Wade
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  2. Odile Plaisant
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  3. Alexis Guédon
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  4. Abdoulaye Dione Diop
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  5. Aïnina Ndiaye
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  6. Philippe Manyacka
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  7. Magaye Gaye
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  8. Sokhna Ba
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  9. Abdoulaye Ndiaye
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  10. Abdarahmane Dia
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Contributions

RW, AN, OP, AD contributed to the development of the project. RW, ADD and SB are involved in data collection. RW, AN, PM and MG contributed to the data management. RW, AG and ADD analyzed the data. RW, AN, OP and AG participated in the writing of the manuscript.

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Correspondence to Racky Wade.

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Wade, R., Plaisant, O., Guédon, A. et al. Morphology of the lateral fossa of the brain (sylvian valley): anatomo-radiological aspects and surgical application. Surg Radiol Anat 41, 639–655 (2019). https://doi.org/10.1007/s00276-019-02228-5

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  • DOI: https://doi.org/10.1007/s00276-019-02228-5

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