The transcallosal transchoroidal approach to the diencephalic-mesencephalic junction: how I do it
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.
KeywordsCavernous malformation Choroid fissure Transchoroidal approach Mesencephalon Diencephalic-mesencephalic junction
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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.
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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