Excision is the removal of an area of damaged tissue (lesion) by cutting it out. An anal lesion could refer to a haemorrhoid (piles) or an anal fistula (a small abnormality in the anal region).
For some haemorrhoids, surgical excision may be the best treatment, particularly if they are large, or external, or they bulge. Haemorrhoids treated in this way, rather than by non-surgical means, are less likely to return. Anal fistulas very rarely heal by themselves, so surgical excision is the only way they can be treated.
Your consultant will talk to you about the best method of treating your condition. If surgery is recommended, you’ll be told what happens during the procedure and what to expect afterwards.
The operation will be carried out under general anaesthetic, so you’ll be unconscious and won’t feel any pain during the procedure. You may need to stay overnight at the hospital after the operation.
The surgical excision of haemorrhoids (haemorrhoidectomy) involves the gentle opening of the anus so the haemorrhoids can be removed. The exact procedure to surgically remove an anal fistula will depend on the size and precise location of your fistula.
You'll probably need to take at least a week off work to recover. You may have some pain after the operation, perhaps for some weeks, which we’ll help alleviate with painkillers. You may have some bleeding and problems passing urine and stools.
The operation is usually a successful treatment which most patients tolerate well with wounds that heal quickly. We’ll arrange to see you a few weeks after surgery to make sure the treatment has been fully successful.