Background: Early determination of the local staging of colorectal cancer is very important to determine the prognostic and optimal management of therapy. The purpose of this study was to determine the local staging characteristics (T2, T3) of colorectal cancer on MSCT imaging.Method: a descriptive design with a retrospective analytical observation approach, namely by evaluating the results of a local staging CT scan (T2, T3) of colorectal cancer. The sample size was 34 cases of colorectal cancer that met the inclusion criteria.Results: 8 cases (23.5%) of colorectal cancer were found with local T2 staging and 26 cases (76.5%) with local T3 staging. The characteristics of local staging T2 are the majority of 100% solid components, 100% clear boundaries, 100% homogeneous enhancement patterns, and 100% not invading surrounding organs. While the characteristics of the local staging of T3 are mostly solid components 61.53%, unclear boundaries 73.07%, irregular margins 96.15%, mass morphology 88.46%, homogeneous enhancement patterns 61.53% and heterogeneous 38.46%, does not invade the surrounding organs 100%.
Conclusion:The differences in the characteristics of local T2 and T3 staging lie in the tumor boundaries, tumor shape, and patterns of enhancement.
Colorectal cancer (CRC) is a type of malignancy in the digestive system. Colorectal cancer can be found anywhere along the large intestine from the cecum to the rectum. However, transverse colorectal cancer is a rare case and is only found in 6.8% of total colorectal cancers. A 64-year-old male patient with complaints of weakness, changes in the pattern of defecation, namely dark brown bowel movements for approximately +/- 8 months, anemia, and an increase in serum CEA. The results of the initial examination with plain abdominal radiographs did not reveal any abnormalities, only normal gas shadows mixed with fecal material were found that were prominent in the right to left hypochondrium region. After further examination, the patient was found to have stage 4 transverse colorectal cancer. The diagnosis of transverse colorectal carcinoma (CRC) was established based on fluoroscopy findings which showed filling abnormalities and colonic lumen irregularities in the medial 1/3 of the transverse colon forming an apple core image with the narrowest diameter + /- 3 mm along +/- 6 cm, shouldering sign (+), and on CT abdomen with contrast, an intraluminal malignant mass was found (Staging AJCC 8th ed 2018 T4aN2aM0). The diagnosis of CRC was confirmed by the results of resection and histopathological examination which found well-differentiated adenocarcinoma of the colon.
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