Fig. 1

The morphological characteristics and arrangements of cells in the LBC preparations of patients with endometrial lesions (Papanicolaou stain, 400). A Endometrial polyps. The glandular epithelial cells were evenly distributed and arranged in flat sheets. The cells were round and oval, with the same size and equal cell spacing. B Atypical hyperplasia cells. The glandular epithelial cells were crowded and overlapped, and the two-dimensional flat sheet distribution had disappeared. The nuclear enlargement was within three times compared with that of normal endometrial nuclei. C Endometrial carcinoma cells. One cancer cell nucleus at the left edge of the cell cluster was significantly enlarged, which was more than five times compared with that of other nuclei. D Endometrial carcinoma cells. The clusters of cancer cells were arranged in multistage papillary arrangements. E Endometrial carcinoma cells. Most of the nuclei in the cancer cell cluster showed large and numerous nucleoli. F Endometrial carcinoma cells. Some cancer cells in the cancer cell cluster exhibit large vacuoles containing neutrophils in the cytoplasm. G Endometrial carcinoma cells. Lobulated arrangements: a cluster of cancer cells is about to divide into six small clusters of cells, and there are still connections between the small clusters. H Endometrial carcinoma cells. On the surface of the cell cluster, there were many escape cancer cells with elongated nuclei