Infectious mononucleosis in the older patient.

Six cases of infectious mononucleosis in patients more than 60 years old were reviewed. The geriatric patient with infectious mononucleosis often presents with nonspecific constitutional symptoms, without exudative pharyngitis. The disease may present as fever of obscure origin or mimic chronic lymphocytic leukemia in this age group. Diagnosis is established through characteristic findings on hematologic and serologic studies.