CT and magnetic resonance imaging can evaluate lymph node metastasis in elderly patients with rectal cancer
Objective To analyze the effectiveness of CT and magnetic resonance imaging in evaluating lymph node metastasis in elderly patients with rectal cancer.Methods Ninety elderly patients with rectal cancer admitted to our hospital from March 2022 to May 2024 were included.Surgical and pathological results were used as the gold standard,and 128 slice spiral CT examination provided by Philips(scanning the diaphragm to the lower edge of the pubic bone,accompanied by enhanced scanning)and Discovery 3.0T magnetic resonance imaging examination provided by GE(scanning the lower edge of the pubic symphysis to the level of iliac bifurcation)were provided to evaluate the effectiveness of CT and magnetic resonance imaging in assessing lymph node metastasis in elderly patients with rectal cancer.Results According to the gold standard results,there were 85 positive cases and 5 negative cases.CT examination results showed 60 positive cases and 30 negative cases.CT and magnetic resonance imaging results showed 84 positive cases and 6 negative cases;There are differences in sensitivity,accuracy,and other indicators between CT examination and CT combined with magnetic resonance imaging for the diagnosis of lymph node metastasis in rectal cancer,and CT combined with magnetic resonance imaging has a higher diagnostic value(P<0.05).There is no statistically significant difference in the specificity,positive predictive value,negative predictive value,and other indicators between the two measures(P>0.05);The diameter,number,short to long diameter ratio,venous entrapment sign,serosal infiltration,and mixed signal sign of perirectal fat in positive patients were higher than those in negative patients(P<0.05).Conclusion For elderly patients with rectal cancer,CT combined with magnetic resonance imaging for intervention has good sensitivity and accuracy,it can effectively determine the signs of the disease.
CT examinationmagnetic resonance imaging examinationelderly patients with rectal cancerlymph node metastasisapplication value
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