Journal
ACTA NEUROCHIRURGICA
Volume 164, Issue 10, Pages 2587-2594Publisher
SPRINGER WIEN
DOI: 10.1007/s00701-022-05273-z
Keywords
Cavernous angioma; Endoscopy; Port surgery; Navigation system
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This study evaluated the efficacy and safety of endoscopic transcylinder removal of supratentorial cerebral cavernous malformations (CMs) using a novel wet-field technique. The results showed that this method is safe and effective, achieving complete or subtotal resection of the lesions.
Objective Cerebral cavernous malformations (CMs) presenting with focal neurological symptoms or mass effects require surgical removal. In recent years, cylindrical retractors have been widely utilized for the removal of deep-seated lesions during both microscopic and endoscopic surgery. In the present study, we evaluated the efficacy and safety of endoscopic transcylinder removal of CMs using a novel wet-field technique. Methods We included 13 patients with supratentorial CMs who had undergone endoscopic transcylinder surgery between April 2013 and March 2022. One patient experienced recurrence of the CM and underwent a second endoscopic transcylinder surgery. Therefore, we retrospectively evaluated 14 procedures. The surgical field was continuously irrigated with artificial cerebrospinal fluid to maintain expansion and visualization of the tumor bed. We termed this method as the wet-field technique. Patient characteristics, symptoms, and pre- and postoperative magnetic resonance imaging results were obtained from medical records. Results The average maximum CM diameter was 35.3 mm (range: 10-65 mm). Cylinder diameters were 6 mm in eight procedures, 10 mm in four procedures, and 17 mm in one procedure. Wet-field technique was applied in all cases. The endoscope provided a bright field of view even under water. Continuous water irrigation made it easier to observe the entire tumor bed which naturally expanded by water pressure. Gross total resection was achieved in 13 procedures, while subtotal resection was achieved in one procedure. No surgical complications were observed. Conclusions The endoscopic transcylinder removal using wet-field technique is safe and effective for the removal of symptomatic intracranial supratentorial CMs.
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