text_1: In a patient with infectious mononucleosis, if the spleen is going to get enlarged, how long does it take to do that?  That is, how long should they stay out of sports?  And then the other question is, how long does it take to go back to normal.  Also, how big is a 10-year-old's spleen supposed to be on ultrasound?  Do you have to wait until it goes back to normal size to go back to sports or just wait 4 to 6 weeks and then go back regardless?  Also, is feeling the spleen good enough or do you need to do an ultrasound to see if someone should stay out of sports?
text_2: What is the cause and treatment of this old man's stomatitis?