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  • Title: Reconstruction of skull base defects after minimally invasive endoscopic resection of anterior skull base neoplasms.
    Author: Leong JL, Citardi MJ, Batra PS.
    Journal: Am J Rhinol; 2006; 20(5):476-82. PubMed ID: 17063741.
    Abstract:
    BACKGROUND: The endoscopic resection of the cribriform plate during minimally invasive endoscopic resection (MIER) of the anterior skull base neoplasms may result in large anterior skull base defects. The objective of this study is to describe techniques for the management of skull base defects after MIER. METHODS: Retrospective analysis was performed on patients undergoing MIER and skull base reconstruction between April 2000 and August 2005. RESULTS: Fourteen patients underwent endoscopic resection of anterior skull base tumors and reconstruction during the study period. The mean age was 57.4 years (range, 26-84 years). The sex distribution was eight men and six women. The specific indications for resection included 11 malignant and 3 benign neoplasms. Ten patients received adjuvant therapy, and in two instances this occurred before surgery. In all instances, the dura was exposed; however, only 10 cerebrospinal fluid (CSF) leaks were encountered intraoperatively. Reconstruction of the skull base was successfully performed, most commonly in a multilayer fashion, using an array of materials including cartilage, fat, acellular dermal graft, and mucosal free grafts. Lumbar drain placement was used in seven cases for an average of 5.6 days. No postoperative CSF leaks occurred. The mean follow-up was 18.0 months (range, 1-56 months). CONCLUSION: This report describes methods for the reconstruction of the skull base after MIER. Reconstitution of the skull base barrier can be achieved through application of principles for surgical repair of CSF rhinorrhea.
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