Voprosy onkologii
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The paper presents the results of a complex examination of 198 cases of lung cancer, using computed tomography, which provided additional data in 52.3% of cases. These data were used to assess the tumor spreading to the mediastinum, pleura and thoracic wall. The computed tomography-related features of lymphatic nodes of the mediastinum, both normal and metastatically involved, are discussed.
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Results of standard X-ray tomography, computed tomography and ultrasonic tomography (UT) used for detecting mediastinal metastases from lung cancer were compared in 50 patients who were later operated on. UT sensitivity in the diagnosis of paravasal lymph node involvement proved superior to that of X-ray tomography and only slightly yielded to that of computed tomography. As regards bifurcation lymph node assessment, results of the radiation imaging techniques were similar to those obtained by surgery. ⋯ UT assured detection of metastases in normal-sized lymph nodes of the upper mediastinum. Combined application of standard X-ray and ultrasonic tomography of the mediastinum assured better staging of tumor roughly in half the patients. Absence of X-ray signs of mediastinal lymph node enlargement is considered a direct indication for UT.
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Comparative Study
[The role of computed tomography in the diagnosis of lung cancer].
The paper discusses the data on 229 cases of lung pathology including 85 with cancer. Sensitivity and specificity were 89.4 and 86% for standard X-ray procedures and 91.8 and 90.3% for computed tomography, respectively. Combined application of the methods was followed by a rise in the parameters to 94.1 and 93%, respectively. Computed tomography proved useful for early detection of lung metastases.