Quentin seems to have a locally advanced CA Rectum
for which he is recieving chemoradiotherapy
before surgery. This treatment is accepted all over the world as the chances of cancer getting back after surgery reduces to half as against doing surgery first. CA rectum is a well treatable condition and he should get better with the treatment soon. In case you need to know more about the kind of surgery and the options available you can mail the reports to me.
All the best