What is the condition when a hard lump appears after hernia surgery?

Patient's question:

Male, 19 years old
Disease/Symptom: Hernia
Condition Description: I had hernia surgery half a month ago. Now it's healing with a scar. I can go swimming. However, a new lump has appeared now. It's different from the previous bubble. What is this situation?

Doctor's answer:

Hello. If the package you mentioned is very small, it might be a reaction at the suture site. It is likely caused by the skin rejecting non-absorbable sutures. Without photos, you cannot make a face-to-face diagnosis. Therefore, it is difficult to analyze in detail.
Guidance: It is recommended that if there is no redness, swelling, or pain locally, and the skin temperature is not high, do not subject the patient to such prolonged temporary treatment. If he/she waits and sees, he/she may improve. If he/she does not get better, he/she should go to the hospital to see a doctor for treatment.
Follow-up: Thank you. Doctor. You're welcome.