Objective Through finding and analising 470 cases of Malignant cell of pleural effusion,ascites and perieardial effusion in 2 240 cases from January,2002 to December,2003,to discuss the cytomorphological diagnostic value of routine dropsyexamination on the basis of cytomorphological analyses.

In order to investigate the ultrastructural features of malignant T cell (MTC) in bona marrow aspirate (BMA) from patients with T Cell Lymphoma, the antigen expression of MTC was analyzed by flow cytometry, and the ultrastructural features of MTC in BMA from 13 T-cell lymphoma patients with bone marrow involvement (BMI) were observed by transmission electron microscopy.