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Updated: Aug 23, 2026

High-resolution Functional Magnetic Resonance Imaging Methods for Human Midbrain
Published on: May 10, 2012
Paramedian supracerebellar approach to the upper brain stem and peduncular lesions
1Department of Neurosurgery, University Hospital of Zürich, Switzerland.
Objective:
The infratentorial paramedian supracerebellar approach is useful for lesions involving the upper brain stem or the cerebellar pedunculi. We provide a precise description of this approach and its indications.
Methods:
Four patients were operated on using this approach. The lesions included a squamous cell carcinoma, a glioblastoma multiforme, a hematoma, and a cavernoma. The lesions involved the quadrigeminal plate, the superior cerebellar peduncle, the middle cerebellar peduncle, and the quadrangular lobule of the cerebellum.
Results:
Postoperatively, there was no apparent aggravation of neurological symptoms. The main advantage of the approach was that the operation can be performed with a wide horizontal view without sacrificing the deep veins.
Conclusions:
It is concluded that lesions in the superior and inferior colliculus, superior and middle cerebellar peduncles, and quadrangular lobules of the cerebellum can be safely operated on with this approach.
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