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. 2019 Oct;129(10):2258-2261.
doi: 10.1002/lary.28053. Epub 2019 Apr 30.

Preventing Restenosis of Marsupialized Rathke Cleft Cysts Using a Nasoseptal Flap Lining

Edward C Kuan  1 , Monica S Trent  1 , Neil N Luu  2 , Michael A Kohanski  2 , Charles C Tong  2 , Bert W O'Malley Jr  2 , Nithin D Adappa  2 , James N Palmer  2
Affiliations

Preventing Restenosis of Marsupialized Rathke Cleft Cysts Using a Nasoseptal Flap Lining

Edward C Kuan et al. Laryngoscope. 2019 Oct.

Abstract

Objectives: Rathke cleft cysts (RCCs) are rare, benign lesions formed from remnants of Rathke pouch during embryologic development. However, following marsupialization, maintaining tract patency remains a challenge. Several techniques for decreasing stenosis have been described, including free mucosal grafting, silastic spacing, and using steroid-eluting stents. Nasoseptal flaps (NSFs) have a reliable vascular supply and are widely utilized in skull base reconstruction. We present a novel technique to maintain patency of the marsupialized RCC cavity by lining it with an NSF to promote long-term drainage and re-epithelialization of the RCC cavity.

Methods: Retrospective chart review of all patients who underwent surgery for symptomatic RCCs. These patients underwent endoscopic endonasal surgery between February 3, 2016, and June 12, 2018, with marsupialization followed by circumferential NSF lining. Primary outcomes include symptomatic control, surgical complications, and RCC cavity patency.

Results: Seven patients underwent RCC marsupialization with no intraoperative cerebrospinal fluid leak, followed by circumferential lining of the marsupialized cavity with an NSF. In each case, no cyst re-accumulation or recurrent symptoms were noted, and the NSF lining provided long-term patency of the tract in all cases to a mean of 6.7 ± 10.1 months of follow-up, including one patient with sustained patency at 29 months follow-up.

Conclusion: Utilization of the NSF to "stent open" the RCC cavity following marsupialization is a safe and effective means to prevent restenosis. Advantages include sustained patency of RCC cavity for complete drainage and a dependable vascular supply.

Level of evidence: 4 Laryngoscope, 129:2258-2261, 2019.

Keywords: Rathke cleft cyst; endoscopic skull base surgery; marsupialization; nasoseptal flap; restenosis.

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