<s>[INST]I had surgery for scar tissue back in september and 1 month after it came back...It is larger and hurts so bad.. Nothing helps..Now the doctor says it could be endo.and put me on BC pills..It still is not helping and I am so tired of the pain.What could it be? Never had x-rays or ultrasound to dignose that its scar tissue or endo.[/INST]Hi! Thanks for writing to us sharing the problem of recurrent annoying scar! After going through your history and description of the enlarging lump, I would like to consider few possibilities in this case as per my experience of needle biopsies as following:1. Infected wound2. Suture granulomas3. Atypical tuberculosis infection4. Actinomycosis or other fungal infections5. Low grade malignancy6. Scar endometriosisTherefore, you need ultrasound and needle biopsy or excision biopsy from the lump for a diagnosis, and you might see another surgeon to discuss the possible line of treatment. Regards,</s>