Dr. Kelso is back as Chief of Medicine, without explanation, although he quit in episode 7.9, and did not return in 7.10. All episodes thus far took place in linear sequence, and all flashbacks were clearly marked as such; this change in order of episodes could be the result of the writers' strike and that only episodes shot prior to the strike were aired as part of season seven.
The photo of JD in a towel with Turk exiting to the right is incorrect. A second photo on the detail page showing a Giant in a village (the Janitor in costume) is a valid photo and should be used.
Elliott is disappointed that her patient's C. diff test comes back negative. C. diff (Clostridium difficile) is a bacterial infection that can cause watery diarrhea, fever, nausea, and abdominal pain. Earlier she says her patient has an enlarged liver and her kidneys are shutting down. Neither of those symptoms are caused by C. diff, so she would have had no reason to order that test, nor have been disappointed when it came back negative.
The disease porphyria is pronounced "poor-fear-ee-uh" not "poor-fuh-ree-uh," as seemingly everyone in the cast seems to think.