Step 1

Immunology 2

A 2-year-old boy is brought to the emergency department by his parents who are concerned about fussiness, decreased oral intake, and a fever that has persisted for 5 days despite regular interval dosing of acetaminophen and ibuprofen throughout that time period. Temperature is 40.3°C (104.5°F) but vital signs are otherwise normal. Physical examination reveals bilateral conjunctival injection without exudate as well as erythematous, dry, and crusted lips, mouth, and tongue. Examination of the neck reveals a palpable right-sided, mobile, 2 cm anterior cervical lymph node. A maculopapular rash noted on his chest and the backs and of his hands.

If left untreated, which of the following complications is this patient at increased risk of developing?

  • A) Burkitt lymphoma
  • B) Corneal blindness
  • C) Coronary artery aneurysm
  • D) Mitral valve stenosis
  • E) Third-degree atrioventricular (AV) block


Joe Wawrzynski


Dr. Ted O'Connell