RT Journal A1 RUTKOW IM T1 INfectious mononucleosis-reply JF Archives of Surgery JO Archives of Surgery YR 1979 FD March 1 VO 114 IS 3 SP 346 OP 347 DO 10.1001/archsurg.1979.01370270116031 UL http://dx.doi.org/10.1001/archsurg.1979.01370270116031 AB In Reply.—The response to my article on rupture of the spleen in infectious mononucleosis raises some important points, however, the report never intended to provide answers to any of the queries that Dr Le poses. I attempted to determine if true spontaneous rupture of the spleen, in a patient with infectious mononucleosis, is as common a clinical condition as is taught. In reviewing the world's literature, I found it to be a relatively rare event. It is correct that I did recommend, regardless of clinical, hematologic, and serological recovery from infectious mononucleosis, that full normal activities not be resumed for a two- to three-month period by the nonathlete and that the athlete have a six-month activity-free period prescribed. This, however, was stated as an opinion, and by definition that is a belief not necessarily based on absolute certainty or positive knowledge but on what seems proper to one's own