Also known as: Hernia in groin
Teddy presents with an inguinal hernia that has become strangulated, cutting off blood flow to herniated intestine. He requires immediate surgical repair with mesh reinforcement.
Also known as: Bulimia
Teddy has been purging to lose weight, leading to critical electrolyte depletion (potassium, sodium, magnesium), cardiac arrhythmia, and eventually esophageal rupture. His condition drives the main plot about his relationship with his controlling brother.
Also known as: Esophageal tear
Teddy suffers esophageal rupture from continued purging, requiring emergency gastric transposition surgery where his esophagus is reconstructed using stomach tissue.
Also known as: Severe sinus infection spreading to brain
Lily has a chronic sinus infection that has eroded through the skull base, creating a large brain abscess. She requires both sinus debridement and emergency craniotomy when the abscess causes brain herniation.
Also known as: Brain infection
Lily develops a massive 6x4 cm brain abscess from her sinus infection. When antibiotics fail and the abscess causes seizures and herniation, she requires emergency hemicraniectomy.
Also known as: Spinal cord cyst causing pressure
Dr. Lim's ongoing paralysis is revealed to be caused by a compressive syrinx (fluid-filled cyst) rather than just scar tissue. Murphy proposes surgery that could restore her ability to walk.
Also known as: Uterine scarring
Lea's Asherman's syndrome (uterine scarring) is mentioned as the reason she and Shaun must delay trying to conceive. At episode's end, she reveals she is unexpectedly pregnant, which is described as unsafe for both her and the baby.
Also known as: Bed rest pregnancy
In the episode's final scene, Lea reveals she is pregnant despite her Asherman's syndrome, and her OB has told her it is unsafe for both her and the baby. This sets up a major storyline going forward.
Also known as: Head laceration
Teddy's initial presentation includes a head laceration from hitting himself with a kettlebell during workout, prompting concussion protocol and CT scan.