Swelling of anal abscess incision is abnormal?

Question
Hello doctor,
About 7 months ago, I had an anal abscess surgery. Today, I feel again that the place where the abscess was operated is swollen but I don't feel any pain. The doctor asked me, is the swelling of the anal abscess incision abnormal?
Pham Thi Thuy Dung (2002)
Answer
Answered by Master, Doctor Vu Van Quan - Gastroenterologist - Department of General Surgery & Anesthesia, Vinmec Hai Phong International General Hospital.
Hello,
With the question "Is the swelling of the anal abscess abnormal?", the doctor would like to answer as follows:
Based on the description, it is very likely that you have an anal fistula. Anal fistula is a chronic bacterial infection in the anorectal region, the fistula is a tunnel, inside is a chronic granulomatous tissue created by the chronic inflammatory process. An anal fistula is the result of an untreated perianal abscess that ruptures to form a fistula. You should see a doctor, he will check and if it is an anal fistula, you may need surgery to treat it.
If you still have questions about anal abscess, you can go to a hospital of Vinmec Health System for further examination and advice. Thank you for trusting and sending questions to Vinmec. Wishing you lots of health.
Best regards!