4.3 Article

Endoscopic Far-Lateral Supracerebellar Infratentorial Approach for Petroclival Region Meningioma: Surgical Technique and Clinical Experience

期刊

OPERATIVE NEUROSURGERY
卷 22, 期 5, 页码 290-297

出版社

LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1227/ons.0000000000000126

关键词

Supracerebellar infratentorial approach; Petroclival; Meningioma; Endoscope

资金

  1. Foundation of Science and Technology Commission of Shanghai Municipality [21ZR1413100]

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This study describes the technique and feasibility of the purely endoscopic far-lateral supracerebellar infratentorial approach (EF-SCITA) for the treatment of petroclival region meningiomas. The results show that EF-SCITA provides satisfactory exposure and achieves gross total or subtotal resection in most cases with good neurological outcomes. However, cranial nerve deficits and other complications can occur as postoperative complications.
BACKGROUND: The management of petroclival region meningioma remains the ultimate achievement in neurosurgery, because of the formidable technical challenges involved. OBJECTIVE: To describe the technique and feasibility of the purely endoscopic far-lateral supracerebellar infratentorial approach (EF-SCITA) for the treatment of petroclival region meningiomas. METHODS: We reviewed the clinical data of 10 consecutive cases of petroclival region meningiomas treated with the EF-SCITA from August 2018 to August 2020. The clinical outcomes were analyzed. The patient was placed in the lateral position, and then, a C shaped incision and craniotomy with exposed sigmoid and transverse sinuses were performed. With the endoscopic holder, endoscopic procedures were performed using standard 2-hand microsurgical techniques. Whether the tentorium or Meckel cave was handled depended on the tumor extension. RESULTS: The mean diameter was 45 x 25 mm. Dizziness and headache were the main symptoms. All 10 patients achieved gross total or subtotal resection (Petroclival Meningioma Grade I-III) with good neurological outcomes. The EF-SCITA provides satisfactory, direct exposure to the petroclival region. Cranial nerve deficits are the main postoperative complications. Two patients had a trochlear nerve injury, 3 patients had transient facial paralysis, and 2 patients had oculomotor paralysis (1 total and 1 incomplete), but both of them recovered during the follow-up period. One patient experienced an ipsilateral superior cerebellar artery infarction, and another patient had transient hemiparesis. CONCLUSION: The EF-SCITA is effective for most petroclival region meningiomas, except for the cavernous sinus type. This approach simplifies craniotomy procedures, omits burdensome petrosectomy, and avoids crossing posterior neurovascular structures.

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