目的：了解和评估本院临床不合理应用抗菌药物的主要表现类型。
OBJECTIVE To find out and evaluate the main manifestations of clinical inconsequence use of anti-infective drugs in our hospital.
目的分析肺继发性淋巴瘤的CT和HRCT表现特点，表现类型以及分布特点。
Objective To study the manifestation, classification and distribution of CT and HRCT in pulmonary secondary lymphomas.
实践负效应有其存在的原因和不同的表现类型，在不同的历史阶段各有其不同特点。
Negative effect of practice has its existing reason and various forms different characteristics in different historical stages.
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