Spontaneous splenic rupture in infectious mononucleosis.

Spontaneous splenic rupture occurs in association with infectious mononucleosis. Three cases of serologically proven infectious mononucleosis complicated by spontaneous splenic rupture are described. In two, the diagnosis was confirmed preoperatively by abdominal computerized tomographic (CT) scan. Treatment by splenectomy was curative in all three patients. Infectious mononucleosis patients who have acute abdominal pain must be considered for potential splenic hemorrhage.