Also known as: Collapsed lung
A patient case mentioned in early dialogue where Alex questions whether a patient has pneumonia or is actually experiencing pneumothorax (P.E. also mentioned as differential), demonstrating diagnostic reasoning during his intern years.
Also known as: Blood clot in lung
Mentioned as a differential diagnosis in the same early case where Alex is considering whether a patient has pneumonia, pneumothorax, or pulmonary embolism.
Also known as: Skin cancer that has spread
Referenced as Izzie's past cancer diagnosis that led to her creating embryos with Alex before treatment. The cancer treatment destroyed her eggs, prompting her to use their frozen embryos years later to have children. This past diagnosis is central to the episode's plot as it explains why Izzie has Alex's biological children.
Mentioned briefly as a surgical case Meredith is paged for near the end of the episode, described as being for one of their 'cabbage patients' (likely CABG - coronary artery bypass graft patients).
Also known as: GSW to abdomen
Referenced in flashback when Bailey removed a bullet from Alex's stomach during a hospital shooting. This past trauma is mentioned as part of Alex's history with Bailey and the hospital.