Also known as: ALL
Tucker develops a second leukemia (ALL) caused by chemotherapy from his previous leukemia treatment five years ago. This cancer is localized to his brain due to the blood-brain barrier. Wilson treats it aggressively with double-dose chemotherapy, which cures the cancer but destroys Tucker's liver, requiring a liver transplant.
Also known as: Liver failure
Tucker's liver fails after receiving double-dose chemotherapy to treat his ALL. Over half his hepatocytes die within 24 hours, requiring an emergency liver transplant. Wilson ultimately donates part of his own liver to save Tucker's life.
Also known as: PCP
House identifies global lung damage in Tucker caused by PCP pneumonia, which indicates his immune system is compromised and leads to the discovery of his underlying leukemia.
Also known as: Cancer of the lymphatic system
Del Clinton is a cancer patient in remission undergoing follow-up chemotherapy. Wilson discovers a pulmonary lesion after noting Del's depression during a routine visit, but the lesion resolves with treatment.
Also known as: Depression
Del's uncharacteristic depression during chemotherapy prompts Wilson to order additional tests, leading to the discovery of a pulmonary lesion that requires treatment.
Also known as: Obliterative bronchiolitis
House's team diagnoses a Mexican singer with lung scarring caused by inhaling fumes from excessive microwave popcorn consumption (10 bags daily), a case of diacetyl-induced bronchiolitis obliterans.