Dear Sir , I have undergone a pyloplasty surgery of my left renal pelvis ureter near left kidney  since last 23 days through an eft abdominal cut of about 6 inches ,  Now I observed a visible swelling at  about one inch above from the stiches (cut area). I want to know why it is so.
Yes you must be. Any swelling in the stitches means either an infection or collection of fluid underneath. Both are not good. Must visit your doc ASAP