Oregon Sen. Jackie Winters announced Wednesday evening that she is undergoing treatment for lung cancer after a tumor was discovered by doctors toward the end of this year's legislative session.

Winters, 80, said she developed a persistent cough and after some tests a cancerous tumor was located in her right lung. Additional testing concluded that the tumor was "localized and curable," she said.

"I feel confident I will overcome this health issue and have always appreciated your support, good thoughts, and prayers," Salem's Republican senator said in a statement.

Senate President Peter Courtney learned of Winters' diagnosis a couple weeks ago, and said he was initially taken aback because of all the other "tests" Winters has already gone through.

"Jackie's been tested a lot in life, almost too many times. Here we are again. She's being tested again," Courtney said. "We gotta have her."

Winters had heart surgery in January 2016 to clear a blocked aorta. She was also hospitalized in 2014 after feeling faint.

In her statement, Winters added that she will continue to serve in the senate and plans on seeking re-election in 2018.