Fig. 1

Original high power field digital images of Sysmex UD-10 unit are seen. A single atypical cell (a) and a group of atypical cells (b) belonged to the sample taken from the male patient with a high grade urothelial carcinoma. Sysmex UF-4000 flow cytometry unit gave 5.7 atypical cells/µL result for the patient. In (c) a crowded sample from a 26 years old female patient was seen. Almost all cells were white blood cells that formed a clump of cells as reported by the instrument. Her result was 5.5 atypical cells/µL. A 51 years old female patient showed a large number of squamous epithelial cells some of which were covered with bacteria (d). Her result was 13.7 atypical cells/µL. Samples of these two female patients were examined by digital images taken by UD-10 unit and by manual microscopy of stained slides. No atypical cells were detected