A mother, Lucille Palmeiro, collapses after a blood clot travels from her leg to her heart. After arriving in the hospital, she begins to vomit blood, causing House to expect a Vitamin K deficiency. House's team discover unused Ampicillin and frozen microwave burgers, supporting House's diagnosis. An ultrasound of Lucille's liver reveals cirrhosis and a cancerous tumor. House treats the tumor with ethanol, but is unable to explain the cirrhosis. However, Lucille, in a decision House claims to be inconsistent with her schizophrenia, calls Social Services to take her son. House realizes that Wilson's disease explains the cirrhosis and an eye exam shows copper-colored rings around her corneas. Lucille receives treatment, is healed, and reunites with her son.