The discovery of displaced granulosa cells in the fallopian tube is concerning for a granulosa cell neoplasm and can lead to further surgical intervention. Discerning the risk of neoplasm can be challenging, even with immunohistochemical staining of CD56, a highly sensitive marker of granulosa cell neoplasm. A 48-year-old underwent an uncomplicated hysterectomy and bilateral salpingectomy for s...

The spontaneous development of juvenile-onset ovarian granulosa cell tumors in mice of the SWXJ-9 recombinant inbred strain is a model for juvenile-type granulosa cell tumors that appear in very young girls. To expedite gene discovery in this mouse model of childhood cancer, we did a gene mapping study with the SWXJ-9 recombinant inbred strain and the evolutionarily divergent Mus musculus casta...

Granulosa cell tumors are representative of estrogenic ovarian tumors, and some Sertoli-stromal cell tumors are also estrogenic. The exact cells that are responsible for estrogenesis, however, have yet to be identified. In the present study, 25 sex cord-stromal tumors (20 granulosa cell tumors, 4 Sertoli-Leydig cell tumors, and a Sertoli cell tumor) were immunohistochemically examined for expre...

The cytodifferentiation and subcellular steroidogenic sites in the granulosa cell of the developing follicle and in vitro effect of estradiol-17 ~ (E2) on the granulosa cell of the preovulatory follicle in the human ovary were investigated using the electron microscopic cytochemistry. The follicular cell in the primordial follicle showed an elongated nucleus, rough endoplasmic reticulum, Golgi ...

The timing of cellular exit from the cell cycle during differentiation is specific for each cell type or lineage. Granulosa cells in the ovary establish quiescence within several hours after the ovulation-inducing luteinizing hormone surge, whereas they undergo differentiation into corpora lutea. The expression of Cdk inhibitors p21(Cip1/Waf1) and p27(Kip1) is up-regulated during this process, ...

The timing of cellular exit from the cell cycle during differentiation is specific for each cell type or lineage. Granulosa cells in the ovary establish quiescence within several hours after the ovulation-inducing luteinizing hormone surge, whereas they undergo differentiation into corpora lutea. The expression of Cdk inhibitors p21 and p27 is up-regulated during this process, suggesting that t...

Little is known about the pathogenesis of ovarian granulosa cell tumors. Recently, we reported the identification of a somatic FOXL2 402C-->G mutation that is present in virtually all adult-type granulosa cell tumors, but not in a wide range of other tumor types. This finding has important implications for the diagnosis and classification of ovarian sex cord-stromal tumors, provides insight int...

Sex-cord stromal tumours account for only about 6% of testicular neoplasms.' Leydig cell tumour is the commonest sub-type but other tissues that can be represented in varying amounts and degrees of differentiation include Sertoli, granulosa and theca-lutein elements. Testicular granulosa-cell tumour ofthe adult type is particularly uncommon. This report details a mixed sex-cord stromal tumour o...

Hyperandrogenism is known to perturb ovarian physiology resulting in anovulatory conditions. In the ovary, androgens produced by theca-interstitial cells are converted to estrogens in granulosa cells under the influence of FSH and LH. In some of the target organs, including the ovary, androgens are also converted into their 5alpha reduced metabolites. In the present study, we examined the molec...