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  • Title: Efficacy and Safety of the Rotational Technique for Endoscopic Transforaminal Excision of Colloid Cysts of the Third Ventricle.
    Author: Azab WA, Abdelnabi EA, Mostafa KH.
    Journal: World Neurosurg; 2019 May; 125():e602-e611. PubMed ID: 30716482.
    Abstract:
    BACKGROUND: The main criticism of endoscopic excision of colloid cysts of the third ventricle is the decreased ability to completely resect the cyst wall, therefore increasing the risk of recurrence. The extent of resection varies widely across the endoscopic series and is largely influenced by the surgical technique. We report the results of the rotational technique for endoscopic transforaminal excision of colloid cysts in a series of consecutive patients. Our objective is to contribute to the current literature and to shed more light on an effective and safe yet less commonly used technique. METHODS: Retrospective analysis was performed on 19 patients. Preoperative magnetic resonance imaging (MRI) was evaluated for cyst characteristics. Postoperative MRI was evaluated for residual cyst membranes. Operative records were reviewed for residual cyst components. Excision grade was determined based on the Barrow Neurological Institute grading scale. Symptom resolution was documented clinically. RESULTS: The study included 13 men and 6 women, with a mean age of 35 years (range, 19-56 years) and mean follow-up of 27.74 months (range, 4-55 months). Total excision was achieved in 17 of 19 cysts (89.5%). A small residual was seen intraoperatively but not radiographically in 1 patient. In another patient, residual cyst membrane seen intraoperatively and radiologically led to recurrence 18 months postoperatively. No mortalities or permanent morbidities occurred. CONCLUSIONS: Our high total excision rate and low complication profile are in concordance with the recent reports of endoscopic resection of colloid cysts. The rotational technique for the endoscopic transforaminal approach is highly effective and a safe alternative to the bimanual dissection technique.
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