The surgeons prepare to change Matty's life as he knows it without forewarning him. Since we aren't even halfway into the episode yet and Wilson, the Angel Of Death, is lurking around the operating room, I have a very bad feeling about this.
Who watches curling on television? House does, although he's understandably fallen asleep from boredom when his phone rings and wakes him up. It's Wilson, who says they didn't remove Matty's mitral valve during the operation after all; they did a biopsy on the heart growth first and found out that it wasn't infectious tissue. I still don't understand why no one on this show can properly identify a mass. They are always thinking it's one thing when it's actually something else. How can they have the technology and ability and know-how to operate on a fetus while it's inside the womb and still not know if a spot on an MRI is cancer or pus? "Oh, god," House says. He's not horrified at the thought of almost ruining Matty's life for no reason, though: he's just realized that Hector got into his Vicodin and is lying on the floor looking dead. I guess it's a good thing Wilson didn't take that dog in after all, since we all know he would have left Hector there to die. House pokes the dog with his cane and is clearly disappointed to find him alive but strung out on Vicodin. My friends' dog ate part of a Sudafed once and was in doggy ICU for days. Hector must have quite a tolerance there.