Also known as: Testicular cancer
Patient scheduled for surgical removal of cancerous testicle. Surgery nearly proceeds on wrong patient due to clerical error when circumcision status doesn't match expected presentation, highlighting the episode's theme of medical mistakes.
Ben presents with a nail penetrating through his hand from a nail gun accident at his contracting job. Treated with morphine and referred to hand surgeon. Later noted to have prolonged bleeding from this wound.
Also known as: Blood cancer
Central diagnosis of the episode. Ben's hand wound shows prolonged bleeding, leading JD to order blood work. Despite multiple attempts by hospital administration to dismiss concerns about potential lab errors, JD's instincts prove correct when hematopathologist confirms leukemia diagnosis. This drives the episode's main theme about trusting medical instincts and the importance of catching mistakes.
Also known as: Unplanned pregnancy
Patient initially told she is pregnant, causing distress as she and her fiancé had not been sexually active. JD later discovers lab error - urine samples were switched with another patient also named Tracy. Serves as example of clerical errors that drive the episode's theme.