Table 1. Protocol of Preoperative Evaluations of Patients Based on Tumor Type .

Cancer Type	Chest X Ray	Upper GI series or Barium enema	Endoscopy	EUS	CT scan	MRI
Esophageal	√	√	√	√	Chest/abdomen
Gastric	√	√	√	√*	Abdomen/pelvis
Colorectal	√	√		√**	Abdomen/pelvis	√***

* EUS was performed in selected patients with proposed locally advanced lesions in CT scan

** In rectal cancers

*** used in selected patients with equivocal rectal EUS

EUS: Endoscopic ultrasonography

MRI: Magnetic Resonance Imaging