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Tectal plate cavernoma-a special entity of brainstem cavernomas: case report
Alejandro Cristini1, C Fischer, Marc Sindou
1Department of Neurosurgery, Hopital Neurologique Pierre Wertheimer, University of Lyon, Lyon, France.
Surgical Neurology
|May 4, 2004
Summary
Tectal plate cavernomas (TPC) are rare brainstem lesions. Surgical resection via an occipital-transtentorial approach, guided by auditory evoked potentials monitoring, offers a safe and effective treatment for TPC, leading to excellent patient outcomes.
Area of Science:
- Neurosurgery
- Neurology
- Vascular Malformations
Background:
- Brainstem cavernous malformations (BCM) present significant bleeding risks and neurological morbidity.
- Tectal plate cavernomas (TPC), a rare subtype of BCM, have limited reporting in medical literature.
Observation:
- A 24-year-old male with a tectal plate cavernoma experienced worsening symptoms including headaches and drowsiness, despite prior shunting for hydrocephalus.
- Imaging revealed a compressive cavernoma on the left tectal plate with residual hydrocephalus.
Findings:
- Surgical resection via an occipital-transtentorial approach was performed with intraoperative brainstem auditory evoked potentials (BAEPs/MLAEPs) monitoring.
- Total resection was achieved with only a transient, mild auditory deficit (hypovoltage of wave V).
- The patient achieved a 100% Karnofsky score seven months post-surgery, resuming professional activities.
Implications:
- TPCs are surgically accessible lesions on the dorsal brainstem.
- The occipital-transtentorial approach is a viable surgical strategy for TPCs.
- Intraoperative auditory evoked potentials monitoring enhances surgical safety and patient outcomes for TPC resection.