2. CT structure report of colon cancer.

Name　　　　　　　　　 Sex　　　　　　　　　　Age　　　　　　Image number　　　　　　Date of examination　　　　 Inspection item　　　　　 Colon CT　　　　　　　 Clinical diagnosis
CT, computed tomography; RSM, retroperitoneal surgical margin; EVMI, extramural vascular invasion.
Tumor location
Left colon　　　　　　　　　[　]	Right colon	[　]
Cecum		[　]
Ascending colon		[　]
Hepatic flexure of colon		[　]
Transverse colon		[　]
Splenic flexure of colon		[　]
Descending colon		[　]
Sigmoid colon		[　]
Size measurement
Mass type		Size of mass: __ mm × __ mm
Intestinal wall infiltration		The thickest layer of tumor: __ mm
RSM (only applicable to the ascending/descending segment)		[　]
Tumor staging		[　]
Invasion to submucosa (T1)		[　]
Tumor invades the muscularis propria but does not penetrate into the muscularis propria (T2)		[　]
Tumor breaks through muscularis propria (T3) <5 mm		[　]
Tumor breaks through muscularis propria (T3) ≥3 mm		[　]
Tumor invades beyond peritoneal coverage (T4a)		[　]
Invasion of adjacent organs (T4b)		[　]
Lymph node		[　]
No. of suspected positive lymph nodes in the region ___ Maximum short diameter ____
No. of suspected positive retroperitoneal lymph node ___ Maximum short diameter ____
EMVI		[　]
Distant metastases
Liver metastases		[　]
Lung metastases	Left lung [　]	Right lung [　]
Peritoneal implant metastases		[　]
Other metastatic lesions		[　]
Other abnormal signs
Tumor perforation		[　]
Intestinal obstruction		[　]
Diagnostic comments: ctT __ N __ M, EMVI (　).