Lamar Odom has had significant improvement in his condition

Lamar Odom has had significant improvement in his condition in the last 24 hours and now he's breathing completely on his own. Our hospital witnesses say Lamar has been taken completely off the ventilator. We're told he's still wearing an oxygen mask to increase his oxygen levels. Another big improvement ... Lamar has been responding to doctors both physically and verbally today and his heart is still doing well. That said, Lamar still has major medical issues ... several organs are still not responding. As our source put it, "this is the best 24 hours he has had so far." (TMZ)