CHARLOTTE, N.C. -

Carolina Panthers offensive tackle Andrew McDonald revealed Wednesday that he was diagnosed with testicular cancer May 19. He had surgery the next day, which McDonald said removed the cancer.

McDonald mentioned "a little bump" to Panthers' doctors during a physical in the spring, and an ultrasound found the cancer. Fortunately, the cancer was found before it had time to spread.

"Right now it's out. It's been four weeks now, the incision's recovered well and I'm feeling good," McDonald said.

When Carolina signed the 25-year-old to its practice squad in October, few noticed. But in February, his name popped up in national headlines. He confirmed he was a victim described in an investigation of the Dolphins' harassment scandal, a past McDonald understandably didn't want to get into Wednesday.

McDonald will return to the field in training camp to once again fight for a job. And considering the battles he has already gone through, he should not be counted out just yet.

"They scheduled surgery the next day and it kind of hits you at once," McDonald said, when asked what he thought when he learned the diagnosis. "I just made up my mind not to get down and not to let it affect me. Just stay positive and obviously it's worked out, thank God for that."

-- After an offseason where they avoided adding big-money free agents, the Panthers gave three of their young guys contract extensions Wednesday.

Offensive tackle Nate Chandler signed for three more years, while defensive end Mario Addison and safety Colin Jones received two-year extensions. All were going into the final year of their contracts.

"You have to think long-term and be proactive," general manager Dave Gettleman said.

In the best case scenario, Carolina may have locked up a future starting tackle and defensive end, plus a special teams leader, all at a fraction of what it would likely cost to bring in other guys.