Ok thanks for the response :)
Hi,
After a lumpectomy,it's not unusual that a hematoma can linger and then harden to form scar tissue at the site of the incision.With gentle nightly massages with vitamin E oil, the hard lump might smooth away and be gradually absorbed.
If the pain persists you could ask your doctor to order an ultrasound or other tests to make sure that the lump is a scar tissue and if it is, surgical removal would be an option to alleviate the pain.
Best wishes...