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Presigmoid approach for cavernous angioma in the pons--technical note
Yoshitsugu Oiwa1, Kunio Nakai, Yasutomo Masaki
1Department of Neurological Surgery, Wakayama Medical University, Wakayama. oiwa@wakayama-med.ac.jp
Neurologia Medico-Chirurgica
|April 12, 2002
Summary
The presigmoid approach offers a safe surgical route for removing pontine cavernous angiomas, minimizing neurological damage. This technique was successfully used in two patients with brainstem lesions, demonstrating its effectiveness and safety.
Area of Science:
- Neurosurgery
- Neurology
- Vascular Neurosurgery
Background:
- Surgical treatment of brainstem lesions is increasingly feasible with advanced imaging like MRI.
- Direct surgical approaches to intra-axial brainstem lesions pose significant risks of neurological injury.
Observation:
- Two patients with pontine cavernous angiomas underwent surgical removal via a lateral pontine incision using the presigmoid approach.
- The first patient had cranial nerve deficits and hemiparesis; the second experienced dizziness, both due to pontine cavernous angiomas.
Findings:
- Complete removal of pontine cavernous angiomas was achieved in both patients using the presigmoid approach.
- No new neurological deficits were observed post-surgery.
- Image-guided navigation facilitated the craniotomy and lesion removal in one case.
Implications:
- The presigmoid approach is a viable and safe surgical corridor for accessing intra-axial pontine lesions.
- This technique potentially reduces the morbidity associated with brainstem lesion surgery.
- The described technique for presigmoid craniotomy with image guidance may enhance surgical precision.