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A patient had a kidney transplant 2 years ago but developed ESRD again. The patient has been on dialysis for the past year. The patient is now complaining of SOB and edema and is admitted for fluid overload and hemodialysis. Dialysis is performed multiple times during this stay. What is the reason for the patient's admission?
1) Fluid overload
2) Kidney infection
3) Heart attack
4) Lung cancer