Popstar Isaac Hanson has admitted he's "lucky" after undergoing life-saving blood clot surgery on Tuesday.

The singer was rushed to hospital after becoming ill during a gig in Dallas, and underwent emergency surgery for blood clots in his right arm, jugular vein and lungs.

Isaac tells People.com, "I'm feeling pretty good. I'm feeling lucky.

"There were definitely some emotional moments, especially because of having a 6-month-old little boy.

"You can't help but think to yourself: Wow, what if they hadn't caught it when they did? Or what if the clot had been larger?" "

The 26-year-old has made such a remarkable recovery he could even resume the band's tour on Monday in Knoxville, Tennessee.