胸腔积液细胞学检查对诊断结核与恶性胸腔积液有价值。间皮细胞对诊断恶性疾病很有帮助，但对良性疾病，特别是结核性胸膜炎的诊断价值介绍不多。现将我们的观察介绍如下。材料与方法收集1996年一1998年初住院的胸腔积液患者lffi例，其中良性59例，恶性48例c良性胸腔积液包括结 Pleural effusion cytology is valuable for the diagnosis of tuberculosis and malignant pleural effusion. Mesothelial cells are helpful in the diagnosis of malignant diseases, but little is known about the diagnostic value of benign diseases, especially tuberculous pleurisy. Now we observe the following introduction. Materials and Methods Lffi patients with pleural effusion who were hospitalized in early 1996-1998 were collected, of which 59 cases were benign and 48 cases were malignant. The benign pleural effusion included knot