The diagnostic effectiveness of ultrasound and lymphographic investigations was assessed in 89 rectal cancer patients. Lymphography was shown to be a more informative method as it permitted the detection of metastases in 6 patients in whom USI results were negative, metastatic involvement in 2 patients, specifying the type of pathological changes of the enlarged lymph nodes in 14 patients. In a normal lymphographic picture metastatic involvement was detected in 37 cases using echography. More extended metastatic spreading was found on USI (as compared to lymphography) in one patient. The combined use of echography and lymphography improved the diagnosis of rectal cancer lymphogenous metastases.
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