• World Neurosurg · Nov 2017

    Case Reports

    Four-hand suction-irrigation technique leads to gross total resection and long-term-progression free survival in fourth ventricular ependymoma.

    • Sascha Marx, Ehab El Refaee, Soenke Langner, and Schroeder Henry W S HWS Department of Neurosurgery, University Medicine Greifswald, Greifswald, Germany..
    • Department of Neurosurgery, University Medicine Greifswald, Greifswald, Germany. Electronic address: marxs@uni-greifswald.de.
    • World Neurosurg. 2017 Nov 1; 107: 437-444.

    BackgroundGross total resection is often avoided in posterior fossa ependymoma surgery because of the fear of permanent neurologic deficits after operation. However, the extent of resection is a major prognostic factor for progression-free and overall survival. This study evaluates the outcome of posterior fossa ependymoma gross total resection in adult patients using a 4-hand suction-irrigation technique at the floor of the fourth ventricle.MethodsAll surgical procedures for posterior fossa ependymomas performed since 2001 in the Department of Neurosurgery, University Medicine Greifswald were analyzed.ResultsEight patients (2 women and 6 men; mean age, 41.9 years; range, 29-56 years) underwent surgery for posterior fossa ependymoma. All tumors were World Health Organization grade II. Tumor adherence was found to be in the caudal rhomboid fossa (between the obex and striae medullare, but below the facial colliculus) in all patients. The 4-hand suction-irrigation technique led to gross total resection in all patients (100%), without significant permanent neurologic deficits after surgery. None of the patients got further treatment (chemotherapy, radiation therapy, or second surgery). In none of these patients, tumor recurrence was seen on magnetic resonance imaging after a mean follow-up of 102 months (range, 14-181 months).ConclusionsLong-term progression-free survival in adult patients suffering from posterior fossa ependymoma is possible by gross total resection without adjuvant radio- or chemotherapy. By careful bimanual microsurgical dissection using the 4-hand suction-irrigation technique and avoidance of bipolar coagulation on the floor of the fourth ventricle, the risk for permanent neurologic deficits is low.Copyright © 2017 Elsevier Inc. All rights reserved.

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