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A hybrid simulation model for pre-operative planning of transsphenoidal encephalocele

  • Technical Note
  • Published:
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Abstract

Congenital transsphenoidal encephalocele (CTE) surgical correction is a challenging procedure. Although rare, this anomaly, characterized with neural herniation elements, including the pituitary gland or optic pathway through the sphenoid bone with anatomical alteration, can be presented in many different ways and should be individually analyzed. Significant advances in medical technology and the 3D models may simulate the complex anatomical relations of the human body. Nowadays, medical education relies on the availability of standardized materials that can reliably emulate human anatomy. Therefore, realistic anatomical models have become an alternative for cadavers or animal specimens. In this technical note, the authors present a new technique to create personalized models that combine 3D printing, molding, and casting to create an anatomically and tactilely realistic model based on magnetic resonance and computerized tomography images. Produced from different silicon types, the model recreated the anatomic alterations precisely, allowing a multidisciplinary team to determine the adequate surgical approach for this patient. We describe a case of congenital transsphenoidal encephalocele of a 3-year-old boy, whose surgical correction was planned using a hybrid model. The technical description of the model is given in detail. This new hybrid model allowed a detailed discussion of the surgical approach aspects by having tissues of different consistencies and resistances and a very high prediction rate. This approach may allow a reduction in surgery time and possible complications after operative procedures.

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Acknowledgments

We thank Gustavo Zagatto for the creation of the virtual model and preparing the artistic images for building the model and Márcia Castro for developing the hybrid model. We thank Fabiano Carvalho, Medtronic company, and EDUCSIM Institute for scientific support. Finally, we thank Pedro Augusto Marques de Lima for making the video edit.

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Authors and Affiliations

  1. Santa Marcelina Hospital, São Paulo, Brazil

    Giselle Coelho, Eduardo Varjão, Thailane Marie, Daniella Brito, Emilio C. Del Massa, Henrique Zuppani, Belmiro Matos & Maurício Yoshida

  2. EDUCSIM Institute, São Paulo, Brazil

    Giselle Coelho

  3. University of São Paulo (USP), São Paulo, Brazil

    Giselle Coelho, Nicollas Nunes Rabelo, João Paulo Mota Telles, Manoel Jacobsen Teixeira & Eberval Gadelha Figueiredo

  4. Neurosurgery Department, University of São Paulo, Brazil-Rua Eneas Aguiar, 255, São Paulo, 05403-010, Brazil

    Eberval Gadelha Figueiredo

Authors
  1. Giselle Coelho
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  2. Nicollas Nunes Rabelo
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  3. Eduardo Varjão
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  4. Thailane Marie
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Correspondence to Eberval Gadelha Figueiredo.

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Coelho, G., Rabelo, N.N., Varjão, E. et al. A hybrid simulation model for pre-operative planning of transsphenoidal encephalocele. Neurosurg Rev 44, 1767–1774 (2021). https://doi.org/10.1007/s10143-020-01361-9

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  • DOI: https://doi.org/10.1007/s10143-020-01361-9

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