CT in the Assessment of the Depth of Tumor Invasion of Colon Cancer
https://doi.org/10.24835/1607-0763-2017-1-44-52
Abstract
Objective: to study the symptoms of tumor lesions of colon and to determine the CT criteria for assessing the depth of tumor invasion in patients with colon cancer.
Materials and methods. CT data were analyzed at 121 patients with colon cancer. All patients were fully resected and CT data were compared with data of morphological studies. Staging was performed according to TNM classification 7th ed. (2009).
Results. We evaluated CT symptoms of tumor lesions in comparison with the data of pathological category T (pT): type of tumor, its structure, the condition of the external colon contour, the state of paracolon fat and its density, the presence of fat image between the tumor and adjacent organs and tissues, CT signs of invasion of malignant process in the neighboring organs and adjacent structures. For tumors with extraintestinal growth (T3–4 category) are characteristic CT symptoms: tumor heterogeneous structure (p < 0.001) with a fuzzy outer contour of the colon in the affected area (p < 0.05), the presence of changes in the paracolon fat whose density −76,95 HU and more, the invasion into adjacent organs at T4 category. The diagnostic efficiency of CT in determining T3–4 category was as follows: 90.9% accuracy, sensitivity 93.6%, specificity of 81.5%.
Conclusions. Computed tomography is a highly informative method for determining extraorgan spread of colon cancer, which allows to determine the amount of preoperative surgical treatment and adjust treatment tactics.
About the Authors
O. G. Beketova
A. Tsyb Medical Radiological Research Centre – branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation
Russian Federation
Russian Federation
research scientist of CT department of A. Tsyb MRRC, Obninsk
249036, Koroleva str., 4, Obninsk, Kaluga region. CT department of A. Tsyb MRRC. Phone: +7-484-399-33-03
N. K. Silanteva
A. Tsyb Medical Radiological Research Centre – branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation
Russian Federation
Russian Federation
doct. of med. sci., chief of CT department of A. Tsyb MRRC, Obninsk
T. P. Berezovskaya
A. Tsyb Medical Radiological Research Centre – branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation
Russian Federation
Russian Federation
doct. of med. sci., professor, chief research scientist of MRI department of A. Tsyb MRRC, Obninsk
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Review
For citations:
Beketova O.G., Silanteva N.K., Berezovskaya T.P. CT in the Assessment of the Depth of Tumor Invasion of Colon Cancer. Medical Visualization. 2017;(1):44-52. (In Russ.) https://doi.org/10.24835/1607-0763-2017-1-44-52
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