How do you perform surveillance on metastatic well differentiated neuroendocrine tumors?  

Well differentiated NETs span the Ki67 proliferation spectrum of 0% to well above 50% and have a very variable, and at times unpredictable, history. Grade 3 well differentiated NETs are increasingly recognized. A general rule, but not perfect, is that higher Ki67 predicts more aggressive tumors. Tum...