Also known as: Stomach cancer
Mr. Lawton presents with abdominal discomfort initially thought to be heartburn. Jo orders an endoscopy against J.D.'s initial recommendation, which reveals stomach cancer. This diagnosis drives the episode's subplot about Jo learning to balance clinical thoroughness with empathy, and culminates in her attempting to comfort the patient about his cancer diagnosis.
Jo mentions Mr. Lawton's chronic heart disease in a callous manner, calling it a 'buzzkill,' which serves as an early example of her lack of bedside manner that J.D. is trying to address throughout the episode.
Also known as: Type 2 diabetes
Turk's diabetes is mentioned when Elliot expresses concern about him eating cookies, noting it's one of the rare times he gets to eat sweets due to his condition. This is part of Turk's ongoing character health arc.
Also known as: Lung cancer
J.D. references a patient from the previous Monday, a young father who died of lung cancer. This is used to illustrate the emotional toll that caring too much can take on doctors, contrasting J.D.'s approach with Jo's emotional detachment.