Michinori Sato

Growth of the Fetal Kidney Assessed by Real-Time Ultrasound

We present a method for measuring the size of the fetal kidney by real-time ultrasound. We examined 241 normal pregnancies and 27 pregnancies with intrauterine growth retardation by this method. The cross-sectional area of the kidney (KA) increases linearly from 20 weeks to term whereas the relative size of the kidney to the abdomen (KA/AA ratio) remains constant during this period. Growth-retarded fetuses had significantly smaller KA values than normal fetuses but their KA/AA ratios were generally in the normal range. The results showed that the growth of the fetal kidney correlates well with that of the abdomen and could be an additional parameter for the detection of intrauterine growth retardation.

Cytological Findings of Leiomyoma and Leiomyosarcoma of the Stomach

The purpose of this study is to compare cytological findings of leiomyoma and leiomyosarcoma of the stomach. The two groups of 7 cases with leiomyoma and 4 cases with leiomyosarcoma were analysed Cytological materials were obtained by direct smear method from surgical specimen, and observed microscopically under 1000×magnification with Pap. staining.1. leiomyoma cells: The means of the minor axis diameter of nuclei was found to be 4.6μ and narrowly distributed. Nuclei were cigar-shaped with rounded tips and contained normally stained granular chromocenters.2. leiomyosarcoma cells: Nuclei of most cells were oval or rounded shaped and pleomorphic, containing deeply stained granular chromocenters and clumpy chromocenters.The means of minor axis diameter was 7.5μ and showed a wide scattered distribution pattern.It may be concluded that differential diagnosis by these cytological findings between leiomyoma and leiomyosarcoma could be made.

Morphologic Characteristics of Mammary Carci noma Cells

Cytologic findings of mammary carcinoma of histologictypes were analyzed in this paper. In the cytologic study, 20 cases with medullary carcinoma, 20 cases with papillarycarcinoma and 20 cases with scirrhous carcinomas wereselected from about 200 cases with mammary cancer. Smears were prepared with carcinomatous tissues obtainedfrom these cases by use of excised surgical materials.The smears obtained from medullary carcinoma were themost hypercellular among those three cancer types, and thecells were found tending to remarkably scatter and separatefrom each other. The smears obtained from papillarycarcinomas were characterized by the papillary or tubularcell arrangement in the cluster. The smears obtained fromtypical scirrhous carcinomas were different from those of other two cancer types. The cell size was commonly small, and the cells with picnotic nucleus were often observed inthe smears. The cell clusters were usually composed of less than 50 cells, so the majority of the clusters were smallin size.