Wilson gets a call. House tells him to keep his answers "short and discreet" because he doesn't want Cuddy to know that he's on the phone and make her suspicious of what he's doing. Then House asks whether Cuddy is still playing poker, and Wilson answers in a ridiculous covert operations spy voice, that "the chicken is still in Picadilly Square." Cut to a shot of Cuddy immediately becoming suspicious and knowing exactly who is on the phone with Wilson. House asks Wilson how Cuddy is doing in the game. "The patient's on life support; we're about to pull the plug," Wilson answers in his slick coded language. "Are you talking about me?" Cuddy asks indignantly. She is ignored, and they continue their coded medical speak. House determines that Wilson is holding two hearts with two more hearts on the board and Cuddy is displaying bluffing body language. House tells Wilson to go all in, and he does. Cuddy immediately calls. She has two pair. The river card comes. It's not a heart. Wilson loses the hand and Cuddy's got some chips to play with again. Which is exactly what House wanted.
Ian goes into the MRI of DOOOM! He fidgets a lot.
Out in the hall, Cameron is assigned to parent duty again. They don't understand why Ian is still being tested for stuff when he doesn't have that Erdheim-Chester thing. They also want to know what's going on in this other case they've heard talk of. So Cameron has to tell them that there was another case twelve years ago, but that they never figured out what was wrong with that patient. Because she DIED. I see Cameron is taking some baby steps towards delivering bad news; while she's not quite up to telling people that their family member has died, she is now able to tell them that someone else died twelve years ago. Go, Cameron!
Mom and Dad are called into the MRI booth to talk Ian through the MRI so that he'll stop fidgeting. Can't they just tie the kid down instead? That's so much easier, faster, and doesn't force us to watch a Sad, Poignant Moment of parents trying to reassure their kid that he'll be fine and hide the fact that they're just as scared as he is. "Mommy, are you crying?" Ian asks. She says she isn't, and she's right. No tears will fall from her eyes, because she's not a very good actress.