Oh, I had many exams in my teenaged time because of my a gnarly protruding navel. The very first I cam remember was when I was 10. I got the first school exam at the grammar school and a letter by the school doctor for my mom, in which the school doctor noticed several things that should be examined and cleared up more intensively. I got those letters every year, I had them still, and the school doctors were always complaint about my abdominal problems with often nausea, vomiting, fallings with clear underweight (and later underdevelopment and lack of puberty), but in all letters he also made a complaint of my gnarly protruding bellybutton (outie navel) and that it hurt during palpation and that I would have a navel hernia, that had to be cleared up and examined more thoroughly.
So after this first school exam, my mom took me then very often and regularly to a new paediatrician and when he saw me naked at the very first visit he at once noticed my outie navel and was also really worried about it and examined it always then with longer inspection and intense, hard and deeply uncomfortable poking and palpation.
The same happened then when I was staying in the Childrens Clinic at age 15 because of my abdominal problems (suspicion of crohn´s disease and cancer!): i was examined by several doctors (every morning by paediatricians, then by surgeons, urologist and an oncologist) and several times by a gastroenterologist, who I didn´t liked at all since the very first exam! They always examined long on my stomach and my navel, too, I had to visit the gastro-doc after the clinic-stay regularly then and I absolutely hated the exams by him, because he always examined so long on my stomach (during that I mostly got really nausea and sometimes an urge to vomit!); and he always examined especially on my protruding navel (nearly as long as on my stomach befure), about which he was always very worried and uncontent! He already knew me as "the boy with the sick abdomen and protruding navel/navel hernia"! He inspected my outie bellybutton always very closely, did a very long palpation then during that he poked it hardly in several times (like the paediatrician), but he also squeezed my navel several times between his fingers and tried to pull it more out (as far as possible!) several times, too. That was always so aching, I was mostly nausea afterwards and felt that burning and pulling pain for the next one to two days. During the ultrasound he also examined also directly on and around my outie bellybutton for some time, too. I didn´t like that at all and was also very embarrassed about that all.
I had some similar exams by a public health doctor (directly before I was sent into the hospital) and later by the military exams and by two company doctors, who also criticized my abdominal problems and gnarly outie navel.