Comparative analysis of endoscopic and histopathological features of superficial elevated lesions resected by endoscopic mucosal resection in the distal and proximal colon oleh ARTUR ADOLFO PARADA, CARMEN AUSTRALIA PAREDE MARCONDES RIBAS, FILADELFIO EUCLYDES VENCO, JOSÉ CELSO ARDENGH, MARIANA AMARAL REIS, MATHEUS DEGIOVANI, MIGUEL REYNALDO VARCA-NETO, NILDEDE RODRIGUES DIGER, ROBERTO EL IBRAHIM, KASSIA FERNANDA CORDOVA, MARÍLIA DA CRUZ FAGUNDES, HAMILTON MOREIRA, LUIZ FERNANDO KUBRUSLY