Combination sandwich therapy using cyanoacrylate and polyglycolic acid sheets for refractory enterocutaneous fistula closure

 

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Treating refractory gastrointestinal fistulas is a challenge and often necessitates long hospitalization times. A less invasive endoscopic approach for early complete closure is needed [1] [2]. Possible closure methods include simple filling therapy with cyanoacrylate (Histoacryl; B. Braun, Tokyo, Japan) [3] or polyglycolic acid (PGA) sheets (NEOVEIL; Gunze, Osaka, Japan) [4], or closure with an over-the-scope clip (OTSC; Ovesco Endoscopy AG, Tübingen, Germany) [5], but none have provided satisfactory outcomes. We introduce a novel combination therapy using cyanoacrylate and PGA sheets for fistula closure.

A 71-year-old man underwent low anterior resection for advanced rectal cancer. Contrast radiography via the intraoperatively inserted drain 4 days later revealed an anastomotic leak ([Fig. 1]). Despite conservative therapy for 1 month, the leak progressed to become a refractory enterocutaneous fistula (6 mm in diameter, 3 cm long) within the granulated cavity of the anastomotic site ([Fig. 2]). An OTSC was considered unsuitable because of concerns over endoluminal stenosis after deployment and limited ability to treat the large indurated defect. Instead, we placed small pieces of PGA sheet in the fistula endoscopically, and followed this by spraying with fibrin glue (Beriplast P Combi-Set; CSL Behring, Pennsylvania, USA), but this did not result in successful closure.

Endoscopic combination sandwich therapy was therefore attempted 7 days later using PGA sheets, cyanoacrylate, and PGA sheets ([Fig. 3]; [Video 1]). First, after retracting the drain 2 cm toward the cutaneous side, we placed small pieces of PGA into the distal side of the fistula. Next, 0.5 mL of cyanoacrylate, followed by 5 mL of 50 % glucose, was injected to consolidate the fistula route. Then, pieces of PGA sheet with fibrin glue were compressed into the proximal side of the fistula ([Fig. 4]). Contrast radiography 9 days later via the drain confirmed successful fistula closure ([Fig. 5]), and the patient was discharged after drain removal. No recurrence has developed during the 4-month follow-up period.

Video 1 A novel endoscopic combined sandwich therapy using polyglycolic acid (PGA) sheets, cyanoacrylate, and PGA sheets to completely close a refractory enterocutaneous fistula.

This method represents a novel effective option to treat refractory gastrointestinal fistulas.

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Publication History

Article published online:
17 July 2020

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