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The Transcallosal Anterior Interfoniceal Approach: A microsurgical anatomy study

  • Autori: Graziano, F.; Ganau, M.; Meccio, F.; Iacopino, D.; Ulm, A.
  • Anno di pubblicazione: 2014
  • Tipologia: Articolo in rivista (Articolo in rivista)
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Objectives: A plethora of surgical strategies have been described to reach deeply lesions situated within the third ventricle, including the Rosenfeld or anterior transcallosal interfoniceal approach (TAIF). Firstly, introduced in 2001, it consists of a small callosotomy followed by the midline transseptal dissection of fornices to enter the roof of the third ventricle. The aim of this microsurgical anatomy study is to describe and show each stage of the surgical procedure, focusing on the possible trajectories to anatomic landmarks. Participants: A total of twenty adult cadaveric specimens were used in this study. Using x3 to x40 magnifications the surgical dissection was carried out in a stepwise fashion and the transcallosal anterior interforniceal approach was performed, analyzed and described. Results: In five specimens out of ten a cavum septum pellucidum was depicted. In five cases out of twenty after the callosotomy the lateral ventricular cavities were reached. Different orientation of the microscope allowed the defining of three surgical trajectories to visualize the region of interest without exposing important functional areas. Conclusion: The TAIF represents a minimally invasive approach to the third ventricle; its tricky surgical steps make appropriate anatomical dissection training, essential to become confident and skilled in performing this approach.