Thanks for your query.Based on the facts that you have posted it appears that you have Horseshoe Kidney
with stones in both the kidneys
Your scan report are suggesting gradual loss of kidney function on both the sides resulting you going in to chronic renal failure
which is manifested by swelling of the face,hand and legs.
Since kidney damage is due to obstruction to the flow of urine due to angulation of both the ureters due to crossing of both the ureters over isthmus of the kidney(portion which connects to both the kidneys)there are chances of recovery of kidney function on excision of this portion of kidney and releasing the obstruction of both the ureters.which will restore the kidney function to near normal.
Please consult urologist
for further treatment.
This surgery can be carried out by any experienced Urologist.