Also known as: A-T
Emily has a rare mutation variant of A-T with unique symptoms on both ATM genes. This genetic condition drives the entire episode as her mother has been experimentally treating it, and it complicates diagnosis of her acute symptoms.
Also known as: Heart tumor
The primary diagnosis of the episode. A benign tumor in Emily's heart that caused multiple systemic symptoms mimicking other conditions. The swinging motion intermittently blocked blood flow through the right atrium, causing cascading complications throughout her body.
Also known as: Thymus tumor
Wilson's cancer diagnosis that drives a major subplot. The tumor has spread to surrounding tissue, and Wilson seeks aggressive concurrent radiation and chemotherapy treatment against medical advice, ultimately attempting an extremely high-dose regimen at House's apartment.
Also known as: Raynaud's
Emily develops sudden loss of circulation to her hands and feet during the MRI, initially thought to be primary or secondary Raynaud's but ultimately revealed to be a complication of the atrial myxoma blocking blood flow.
Also known as: Brain attack
Emily suffers a stroke causing sudden inability to move her arm, resulting from pieces of the atrial myxoma breaking off and blocking blood flow to the brain.
Also known as: Blood clot in liver vein
A blockage in Emily's hepatic vein restricts blood flow to her liver, causing liver failure and jaundice. This is ultimately caused by blood stagnation from the atrial myxoma's inflow blockage.