[Anal fistula treated with collagen plug].

The treatment of high anal fistulae carries a high risk of failure. This case presents a 41-year-old male with a high trans-sphincteric anal fistula. The fistula was treated with a newly introduced biodegradable collagen plug. The plug resulted in rapid healing of the fistula. Six weeks later, superficial retention of the fistula required incision of the external fistula opening. After this, further healing was uneventful and at the four-month follow-up the fistula remained healed.