Celtics forward Kevin Garnett took his trash-talking too far during Tuesday night's Boston-Detroit game, according to message posted on the Twitter account of Pistons forward Charlie Villanueva.

"KG called me a cancer patient, I'm pissed because, u know how many people died from cancer, and he's tossing it like it's a joke," said one message on Villanueva's account.

Villanueva suffers from alopecia universalis, a medical condition that results in hair loss. Garnett is known for his trash talk.

The Pistons confirmed that Villanueva posted the tweets but had no further comment.

"My comment to Charlie Villanueva was in fact 'You are cancerous to your team and our league,' " Garnett said. "I would never be insensitive to the brave struggle that cancer patients endure. I have lost loved ones to this deadly disease and have a family member currently undergoing treatment. I would never say anything that distasteful. The game of life is far bigger than the game of basketball."