1.   Sin must regularly undergo kidney dialysis because of renal problems.

2.   The procedure was needed for kidney dialysis because Sin was having renal problems.

3.   Villegas said Sin continues to undergo regular dialysis due to renal problems and doctors are monitoring his condition.

4.   Vicinelli had been hospitalized days earlier for renal problems.

5.   But physicians ruled out dialysis treatment for the time being, despite a persisting renal problem.