Kiss' Gene Simmons undergoes surgery

According to a new report by TMZ, Kiss bassist Gene Simmons is recovering after undergoing a successful kidney stones surgery. Simmons was admitted into Cedars-Sinai Hospital in Los Angeles early Tuesday morning to undergo a medical procedure that should help get rid of the stones.

The non-invasive surgery saw a stent inserted in Simmons urethra to assist the 70-year-old glam metal icon in passing the stones. The stent - and any remaining stones - will be removed in about a week.

KISS postponed a September 14 farewell tour show in Salt Lake City, UT so that Simmons could undergo the treatment.

The concert marked the third recent postponement by the band following news that shows this month in Oakland, CA and Los Angeles, CA were rescheduled to next spring due to "unforeseen scheduling issues."