The transcallosal transchoroidal approach to the diencephalic-mesencephalic junction: how I do it

  • Giulia Cossu
  • Pablo González-López
  • Roy T. DanielEmail author
How I Do it - Neurosurgical Anatomy
Part of the following topical collections:
  1. Neurosurgical anatomy



Different approaches have to be considered for lesions of the diencephalic-mesencephalic junction based on the localization, extension of the lesion, and relationship to the ventricular system.


We present the case of a young lady who presented with a cavernoma of the junction of midbrain and diencephalon after an episode of hemorrhage. The microsurgical anatomy of the trans-callosal trans-choroidal approach for this lesion is described along with its advantages and limitations.


The trans-choroidal approach allows adequate access to lesions of the diencephalic-mesencephalic junction that project into the third ventricle.


Cavernous malformation Choroid fissure Transchoroidal approach Mesencephalon Diencephalic-mesencephalic junction 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Patient consent statement

The patient consented to the submission of this paper and video for publication.

Supplementary material


This video illustrates the transcallosal transchoroidal approach performed for the resection of a cavernous malformation of the diencephalic-mesencephalic junction in a young lady with hydrocephalus and Parinaud syndrome. The resection was complete and the patient experienced a favorable neurological and radiological outcome at 6 years of follow-up. (MP4 50,167 kb)


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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2019

Authors and Affiliations

  • Giulia Cossu
    • 1
    • 2
  • Pablo González-López
    • 3
  • Roy T. Daniel
    • 1
    • 2
    Email author
  1. 1.Department of NeurosurgeryUniversity Hospital of LausanneLausanneSwitzerland
  2. 2.Faculty of Medicine and BiologyUniversity of LausanneLausanneSwitzerland
  3. 3.Department of NeurosurgeryHospital General Universitario AlicanteAlicanteSpain

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