A proctoscopy could be sufficient but what do I kn

A proctoscopy could be sufficient but what do I know? For all I know, they are sub rosa trying to assess sequellae beyond just the stated scope of the proof of concept, and hence would be examining beyond the colon. Remember, B may be able to address ills from one end (the mouth) of the digestive system to the other (some of the bashers on the other site).