胸腔积液性质的判断和病因的确定,目前存在着一定的困难,约20％的病例经过各种检查其病因仍难以确定,所以,近年来国内外对胸腔积液的鉴别方法作了广泛的研究。本文就近年来有关胸腔积液病因诊断的研究进展作一简要介绍,供临床参考。一、铁蛋白(Ferritin):铁蛋白是人体内普遍存在的铁储存硪白,在铁的储存和代谢方面起重要作用,近年来它也作 Pleural effusion to determine the nature and cause of the determination, there are some difficulties, about 20% of the cases after a variety of tests the etiology is still difficult to determine, so in recent years, the identification of pleural effusion at home and abroad made a wide range of the study. This article in recent years on the diagnosis of pleural effusion etiology make a brief introduction of the progress for clinical reference. First, ferritin (Ferritin): ferritin is a common iron storage in the human body White, iron in the storage and metabolism plays an important role in recent years it also