I have had a large number of rectal exams over the years. Most of the time it was just me and the doctor doing the exam in the room. However, a number of times there were one or more other people (usually other medical professionals) in the room: other doctors, medical students, residents, nurses, chaperons, my mother, etc. Two times stick out to me.
One was only time that there was an explicit chaperon in the room. I was going to get some bleeding hemorrhoids checked out. I couldn’t get in to see the surgeon that normally dealt with in a timely matter so I was getting checked out by a nurse practitioner to see if they needed banding or if I should put it off for a while.
After I described my situation, she directed me to pull down my pants and underwear, kneel on the tilting table, and cover up. She said that she would step out to allow me to get undressed and come back with a chaperon to do the exam.
After coming back with a nurse, she raised up and tilted the table and did a through exam. This included an external exam, a digital rectal exam, and an anoscope exam. All the time she was describing to me what she was doing while pointing things out to the chaperon.
I ended up with a prescription for some steroid suppositories and put off the banding for a few more months. (Which I did with my normal surgeon.)
The other time that sticks out was the time that I had a prostate ultrasound done. There were five people in the room besides me. There was my urologist, the resident who did the exam, another resident, a nurse who was assisting, and another nurse (an LPN). I am guessing that the LPN was there as a chaperon as she didn’t seem to do anything but silently watch the resident do a rectal exam and then insert the probe for the ultrasound while my urologist made suggestion to him.
I am pretty sure that was the most people who watched me get a finger up the butt at one time.