Cristina, Arizona and Mr. Bear are on to their next patient, a little boy with kidney stones. Cristina was especially looking forward to using shockwave therapy to break up the stones, and is disconcerted when Arizona tells her they aren't doing it as he had no blood in his urine that morning. When Cristina asks if they should do it anyway just in case (and the boy's mom looks on, worried, at this little exchange) Arizona asks if she's really suggesting doing an unnecessary surgical procedure on a 9-year-old. She's glum but agrees that it's not necessary, but when Arizona asks her to give the mom and boy the good news, Cristina fakes being cheerful much better than I would have expected. The boy is just excited that he can now eat, and Arizona tells him that Cristina will be happy to go get him something. You can easily guess how happy Cristina is at the prospect.
Looking at Jodie's MRI, Bailey sees that she has an abdominal aortic aneurism (clearly the triple-a Alex was so excited about earlier) that has a 75% chance of rupturing. Alex replies that she is a ticking time bomb, just in case we didn't get it when Bailey gave those chances. Bailey is surprised the woman even woke up that morning, let alone drove a car, and orders Alex to clear her schedule so that they can do surgery right away. She then calls into the room that she'll meet Jodie downstairs with the results. Before she can leave, however, Lexie runs in to ask if she's seen Tom. Bailey is none too happy to hear that Lexie lost him, and as Lexie admits she knows how bad it is, Bailey orders her to stop talking because, "the words you are saying are hurting me." She orders Lexie to find him.
Lexie can't find him and has been reduced to looking behind tiny carts where no grown man could possibly hide. Mark watches her, confused, and tells her that she looks crazy, but she blames him for all of this since he told her to act like she deserved to be there, and that led to her losing a schizophrenic. She's worried about getting fired and informs Mark he's not allowed to be charmed by this, babbling about how he won't get cut but she isn't amazing yet and is therefore on the block. Mark grabs her and orders her to breathe. He reminds her security is on it and says slowly, "You have become a crazy person I do not recognize. I want Lexie back. Can I get Lexie back?" He doesn't get an answer, though, because they hear Tom yelling somewhere nearby. These two so far seem to be generally functional and happy so I'm curious what is going to befall them this season, as this is Grey's Anatomy and couples are not allowed to be functional and happy for any period of time.