system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 19-year-old college student develops a severe sore throat, cervical lymphadenopathy, and atypical lymphocytes on blood film. A heterophil antibody test is positive. For the above patient with a hematologic abnormality, select the most likely diagnosis
assistant
The correct answer is  Heterophil antibodies react against sheep red cells and are not absorbed out by the guinea pig kidney. They are positive in patients with infectious mononucleosis. In 90% of cases, liver enzymes are elevated. Examination of the blood film reveals a lymphocytosis with atypical lymphocytes.