One of the most common questions after cyst treatment is whether the cyst can come back. The answer is yes. A cyst can recur. The chance of this happening depends partly on how the cyst was treated and whether the cyst capsule was removed completely.
Why Can a Cyst Return After Drainage?
Drainage removes the material inside a cyst but usually leaves the cyst wall, or capsule, beneath the skin. If the capsule remains, the cyst can gradually fill again. Drainage can still be useful in certain situations, particularly when a cyst is acutely inflamed or infected. However, drainage is not the same as complete surgical excision.
What Is Complete Cyst Sac Removal?
During surgical excision, the goal is to separate the cyst capsule from the surrounding tissue and remove it as completely as possible. Removing the capsule lowers the chance that the same cyst will return. However, no surgical procedure can guarantee that recurrence will never occur.
Why Are Inflamed or Previously Ruptured Cysts Harder to Remove?
When a cyst ruptures or becomes inflamed, scar tissue can develop around the cyst capsule. This can make the capsule more difficult to identify and separate from the surrounding tissue. For this reason, cysts that have repeatedly become inflamed, infected or drained may be more difficult to remove completely. If we see you when your cyst is inflamed or infected, we typically will give you a course of antibiotics before proceeding with surgery.
Does a New Lump Beside the Scar Mean the Cyst Came Back?
Not necessarily. Some people develop more than one cyst. A smaller cyst beside the original one may not have been noticeable when the first cyst was removed. It may simply become more apparent later. Sometimes with more inflammation in that area from your surgery, smaller cysts that were not evident previously start to increase in size and become apparent. Less commonly, epidermoid cysts can also develop in areas of previous trauma or surgery. A new lump beside a scar should therefore be assessed rather than automatically assumed to be a recurrence.
When Is the Best Time for Cyst Removal?
When possible, elective cyst removal is generally easier when the cyst is quiet and not actively inflamed, draining or infected. If a cyst is significantly inflamed or infected, treatment may be needed first. In some situations, surgical treatment of an infected cyst may also be necessary. The best timing depends on the individual cyst and its clinical appearance.
The Main Takeaway
Drainage and cyst excision are different treatments. Drainage removes the contents of the cyst. Surgical excision aims to remove both the contents and the cyst capsule. When the goal is definitive treatment, the history and condition of the cyst, as well as the ability to remove the capsule completely, can all affect the chance of recurrence.
If you are considering cyst removal, you can learn more about cyst removal in Vancouver, including the different types of cysts, how removal is performed, recovery, scarring and cost.
Written and medically reviewed by Dr. Adelyn Ho, MD, MPH, FRCSC
Plastic and Reconstructive Surgeon
Last reviewed: November 2026
