Cyst removal and seroma - Can incision close but the fluid remain inside?

It is possible for an incision to close while some fluid remains inside, especially in the case of a seroma. A seroma is a collection of fluid that can accumulate in the tissue where a surgery or removal of a cyst has occurred. While the fluid may decrease over time, if the incision closes before all the fluid has been absorbed or drained, it can lead to a firm or hard area under the skin. This can sometimes cause discomfort or pain, as you are experiencing.

The hardening you feel could be due to the body's natural healing process as scar tissue forms, or it might be due to the remaining fluid. Since there is no redness or warmth, and you are on antibiotics, it is less likely to be an infection, which is a good sign. However, persistent pain and hardness should be evaluated by your healthcare provider to ensure proper healing and to rule out any complications.

Your doctor might consider options such as aspiration of the fluid if it becomes problematic or monitoring it to see if it resolves on its own. It's important to follow up with your healthcare provider to discuss your symptoms and any ongoing concerns to ensure appropriate management and recovery.