MSKT in Diagnosing of Metastatic Lesion of Lymphatic Nodes while Colon Cancer Visualization
Purpose. Development of semiotics of regional lymphatic nodes metastatic lesion, differential diagnostics with a benign limfoadenopathy according to multi-slice computer tomography (MSCT) of abdominal cavity with bolus enhancement data at a colorectal cancer. Material and methods. Multi-slice computer tomography of abdominal cavity with bolus enhancement data of 84 patients with morphologically verified colon cancer has been analysed. Researches were performed on the Aquilion ONE tomograph (320 slice) Toshiba computed tomographic scanner. Results. Macrostructural and densitometrical indicators of metastatic lesion of regional lymph nodes were worked out – increase in the size, a roundish form, density of lymph nodes close to tumoral tissue of a large intestine in all phases of contrasting that allowed to increase specificity of MSKT in N-stage establishment to 98%, sensitivity to 89% accuracy to 93%, the predictive value of positive result to 98%, the predictive value of negative result to 89%. Conclusions. Bolus enhancement with scanning in the delayed phase, with the analysis of accumulation and washing away of contrast medium by lymph nodes and a tumor allows to avoid the false positive conclusions based only on increase the cross sizes of lymph nodes.