Also known as: Siamese twins
The central case of the episode involves identical twin infants conjoined at the torso, sharing organs including kidneys and colon. The hospital performs a complex multi-team separation surgery requiring careful coordination of multiple surgical teams over 18+ hours.
Also known as: Kidney failure
During the conjoined twin separation, Brandi develops complete kidney failure with necrosis, possibly from arterial spasm during the procedure. This requires an emergency kidney transplant from her twin sister Andi, who is the perfect immunological match.
During the spinal separation of the conjoined twins, the surgical team discovers a dermoid cyst tangled in the spinal root with significant scarring, requiring careful dissection to avoid paralysis.
Also known as: Spina bifida
Derek Shepherd performs repair of a myelomeningocele as part of the conjoined twin separation surgery, mentioned during the spinal separation phase.
Also known as: Rebar impalement
A patient arrives with multiple gunshot wounds to the chest requiring emergency thoracic surgery. This case serves as another opportunity for Teddy to continue her psychological torment of Cristina by making her repeatedly recount Henry's death.
Also known as: Growth on windpipe
Throughout the episode, Cristina is forced to repeatedly recount the details of Henry's fatal surgery from the previous episode, where his tracheal tumor had eroded through the pulmonary artery causing uncontrollable hemorrhage and death. This serves as Teddy's way of processing grief and tormenting Cristina.