[Conservative treatment in spontaneous splenic rupture due to infectious mononucleosis].

Spontaneous rupture of the spleen secondary to infectious mononucleosis frequently proves to be an urgent surgical decision: splenectomy during a exploratory laparotomy. Few cases have been described where diagnosis was made by means of an abdominal ultrasound and those followed-up and treated conservatively, are most exceptional. A case of rupture of spleen during a course of an infectious mononucleosis, confirmed by abdominal ultrasounds and treated conservatively, with good evolution, is presented.