Theoretically, the introduction of gas as a contrast material into the various soft-tissue planes of the mediastinum, pneumomediastinography, should be the ideal radiologic technic for outlining ...
SCINCE its introduction by Daniels 1 in 1949 the technic of prescalene-lymph-node biopsy has gained favor as a means of studying intrathoracic disease. The simplicity of the method has permitted its ...
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