Large but is it too large?

A fit middled aged patient with FAP is referred for consideration of a duodenal EMR for his duodenal polyposis. Earlier samples have indicated that this is a villous adenoma harbouring up to high-grade dysplasia (VA+HGD). 
SHOULD WE ABORT OR ATTACK? 

■ Abort and refer surgically

Yes, my inclincation as well

■ Attack!

Hm, what is that Spigelman score?

explanation

The Spigelman score is a little peculiar in that patients with scores of 0 to 3 have a very low risk of developing cancer. However, when patients accumulate a score of 4, surgery should be considered as there is a high risk of cancer.  

Of course, many patients with FAP have desmoids which precludes surgery. In those cases I consider intervening endoscopically if: 1) the patient is fit enough to survive emergency surgery to sort out a perforation or cope with a 4+ unit blood loss AND/OR  2) there is a higher than average risk of cancer, for example in a patient with extensive HGD or confirmed IMca. Of course, the lesion also has to be 'resectable' within your level of expertise. Personally, I find lesions situated at 12 O'clock the most challenging to remove.  Furthermore, a general anaesthetic is probably a prerequisite for resections taking longer than 20 min or so (which they always seem to do). 

Thus, I consider the "correct" answer to be 'Abort'!  I decided that the lesion was likely to be too large for me to resect.  Fortunately, the patient was a good surgical candidate.  A 'pancreas sparing duodenectomy' was carried out and a TVA with mainly LGD but also areas with HGD was completely removed. Postoperatively the patient developed pancreatitis and was discharged 4 months later...  Clearly this is 'Tiger Country' for surgeons as well !