Infectious mononucleosis with pleural effusion.
D000293:Adolescent; D006529:Hepatomegaly / Q000209:etiology; D006801:Humans; D007244:Infectious Mononucleosis / Q000150:complications*; D008297:Male; D010996:Pleural Effusion / Q000209:etiology*; D011014:Pneumonia / Q000209:etiology