B.J. Thomas says he is battling stage four lung cancer.The Grammy-winning vocalist, 78, released a statement Tuesday informing fans of his diagnosis and expressing thanks to his friends and loved ones amid the health battle.'I just wanted to take this unique opportunity to share my gratitude to Gloria, my wonderful wife and my rock for over 53 years, my family, friends, and fans,' the Raindrops Keep Fallin' on My Head artist said.
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