Intestinal Neoplasms -- pathology : Atlas of intestinal pathology. Volume 1, Neoplastic diseases of the intestines / Hector H. Li-Chang, Richard Kirsch, James Conner, Aysegul Sari, Aaron Pollett, Hala El-Zimaity, Dhanpat Jain, Romulo Celli, Stephanie L. Reid and Robert H. Riddell