elderly patients with infectious mononucleosis were found to run a longer febrile course ( 13 vs. 7 days , p less than 0.01 ) and to have a lower peak total white blood cell count ( 6,600/mm3 vs. 11,000/mm3 , p less than 0.001 ) and a lower incidence of splenomegaly ( 50 % vs. 76 % , p less than 0.05 ) , lymphadenopathy ( 25 % vs. 94 % , p less than 0.001 ) , and pharyngitis ( 25 % vs. 47 % , p less than 0.05 ) , compared with young patients with infectious mononucleosis .
C0038002
splenomegaly
C0021345
infectious mononucleosis