Pop superstar Whitney Houston has furiously denied reports she has been diagnosed with a deadly brain tumour, and has threatened US tabloid The National Enquirer with legal action. The I WILL ALWAYS LOVE YOU hitmaker has been dogged by reports questioning her health and alleged drug use in recent months. Houston's publicist says, "It's an absolute lie and Ms Houston is evaluating her legal options at this time." However, The National Enquirer is refusing to back down: "We are standing by the story 100 per cent."