Both prognosis and treatment of lymphomas depend strictly on both clinical staging and histologic classification. The role of US was investigated in the evaluation of patients affected with abdominal lymphoma. To this purpose, 52 patients affected with abdominal lymphoma underwent US and CT studies during staging, treatment, or follow-up. A comparison of the results of the two methods shows that the systematic use of US allows 5% of lymph nodes missed at CT to be demonstrated, together with hepatic and splenic involvement also undetected by CT. It is true, however, that the limited number of cases does not allow this result to be correlated with the histopathologic type of lymphopathy. US has also been the examination of choice to evaluate response to chemotherapy and to study suspected relapses. In the authors' opinion, US should become a complementary technique to CT in the staging of abdominal lymphomas.
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