1. MRI structural report of rectal cancer.
| Name Sex Age Imaging number Date of examination
Test item Rectal MRI Clinical diagnosis | ||||||
| MRI, magnetic resonance imaging; LN, lymph node; MRF, mesenteric fascia; EMVI, extramural vascular invasion of rectum. | ||||||
| T-staging of tumor | ||||||
| Lesion localization | ||||||
| Retroperitoneal fold | [ ] Above the retroperitoneal fold and not involved
[ ] Below the retroperitoneal fold and not involved [ ] Across the retroperitoneal fold and not involved [ ] The retroperitoneal fold is involved |
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| Location referring to the distance from lower margin of tumor to the margin of anus | [ ] Upper rectal cancer: within 10−15 cm
[ ] Middle rectal cancer: within 5−10 cm [ ] Lower rectal cancer: within 5 cm |
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| Distance between the lower margin of tumor and the anal rectum ring (cm) | ||||||
| Size measurement | ||||||
| Mass type | Oblique axial position measurement: __ mm × __ mm | Sagittal position measurement (longitudinal diameter): __ mm | ||||
| Intestinal wall infiltration | The thickest intestinal wall measured at oblique axis: __ mm | Sagittal position measurement (longitudinal diameter): __ mm | ||||
| Perimeter of lesions surrounding the intestine | <1/4 loop 1/4−1/2 loop 1/2−3/4 loop 3/4−1 loop | |||||
| Description of T-staging with tumor invasion degree | ||||||
| T1: Tumor invades submucosa | ||||||
| T2: Tumor invades muscularis propria but does not penetrate it | ||||||
| T3: Tumor invades through the outer membrane of the muscularis propria and reaches into perirectal mesenteric fat [ ] __ mm | ||||||
| T3a: Tumor invades through muscularis <5 mm | ||||||
| T3b: Tumor invades through muscularis for 5−10 mm | ||||||
| T3c: Tumor invades through muscularis >10 mm | ||||||
| T4a: Tumor penetrates the peritoneum or serous membrane (upper rectum) | ||||||
| T4b: Tumor invades adjacent organs | ||||||
| Remark: | ||||||
| N-staging of lymph nodes (evaluation of lymph node margins, morphology and internal signal characteristics should be integrated) | ||||||
| [ ] LN around the superior rectal artery | No. of suspicious LNs: | Maximum short diameter: | ||||
| [ ] LN inside the mesenteric fascia | No. of suspicious LNs: | Maximum short diameter: | ||||
| [ ] LN adjacent to the internal iliac vessels | No. of suspicious LNs: | Maximum short diameter: | ||||
| Lateral LN | ||||||
| [ ] Obturator artery LN | No. of suspicious LNs: | Maximum short diameter: | ||||
| [ ] Internal iliac vessels LN | No. of suspicious LNs: | Maximum short diameter: | ||||
| Remark: | ||||||
| M-staging | ||||||
| [ ] Groin LN | No. of suspicious LNs: | Maximum short diameter: | ||||
| Remark: | ||||||
| MRF status | [ ] Positive: front,
back, left, right |
Causes of MRF positive: tumor, lymph nodes, cancer nodules, positive EMVI | ||||
| [ ] Negative | ||||||
| Remark: | ||||||
| EMVI | [ ] Positive: front,
back, left, right |
Location: referring tumor location (upper, top and lower segments) | ||||
| [ ] Negative | ||||||
| Remark: | ||||||
| Other abnormal signs [ ] suggest the possibility of mucinous adenocarcinoma | ||||||
| Diagnostic comments: mrT __ N __ M __, MRF ( ), EMVI ( ). | ||||||