Morphological Characterization of Endometrial Cells
The histological and cytological sections stained by H-E and Papanicolaou method from same patient were observed under optical microscope (Figure 2 ). In the semi-quantitative scoring system, the cellularity (t = -3.969, P = 0.000), informative background (t = -2.376, P = 0.019),and cytoplasmic details (t = 2.042,P = 0.043) of H-E stain were significantly different from those of Papanicolaou stain. The cellularity and informative background of Papanicolaou stain were superior to those of H-E stain. The cytoplasmic details of H-E stain were superior to that of Papanicolaou stain. The background blood debris (t = 0.818, P = 0.414), monolayer (t = 0.464, P = 0.643), cell architecture (t = 1.620, P = 0.107), and nuclear details (t = 1.419, P = 0.158) revealed no statistic difference in both groups. In conclusion, the morphological characterization of endometrial cells by Papanicolaou stain was better than that of H-E stain.