A 16-year-old boy had tonsillitis lasting for more than one week. A quick antigen test for group A streptococci was negative. Submandibular lymphadenopathy was observed. The diagnosis of mononucleosis was supported by enlarged spleen (16 cm). The maximum length of a normal spleen is about 11 cm. The patient was advised to avoid contact sports for one month, because the risk of spleen rupture is increased.
Mononucleosis and splenomegaly