الفهرس 
Mesothelial cellsOnly 14 pages are availabe for public view
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Abstract
Sixty two cases of pleural effusion were examined using cytologic smears, out of them 43 cases were benign, 12 cases were malignant and 7 cases showed false negative results. Out of 43 benign cases, 5 cases were due to tuberculosis, 7 cases were due to postpneumonic effusion m d 31 cases were due to empyema. No false positive results were recorded in benign cases. Typing of the nature of the lesion was possible in tuberculosis, postpneunionic effusion and empyema. Tuberculosis is characteriaed by lymphocytic predominance and rare mesothelial cells. Postpneumonic effusions are characterised by neutrophilic predominance while in ernpyema, pus cells are predominant. All malignant cases were due to secondary metastatic involvement of the pleura. Eon of them were due to primary pleural neoplasm. Typing of the nature of the tumour in all malignant cases was possible. Nine cases out of 12 positive cases showed haemorrhagic effusion.