不是癌细胞。

 这个胸水涂片偏厚，细胞重叠，不好说。仔细看，可见多为间皮细胞，少数高度核异质细胞。建议再送胸水涂薄片检查。

The cytologic details of the photos are not very high. While carcinoma and reactive mesothelial hyperplasia are the two main differential diagnoses, cytologic details are essential in their distinction. In addition, the hypercellularity and complex papillary groups of the cells present also suggest malignant mesothelioma. If there is enough specimen to prepare a cell block, immunohistochemical stains are very helpful. If not, chect CT scans need to be examined carefully for any pleural irregularity or tumors. If there is abnormality, a thoracic surgeon has to be consulted to do a thoracoscopic biopsy of any suspicious tumors on pleural surface.

   我感觉是大量组织细胞和间皮细胞

 to my viewpoint, the interpretation should be reactive mesothelia cells.