Hiroshi Ishikawa

BACKGROUND: Diffuse uterine leiomyomatosis (DUL) is a rare condition characterized by innumerable leiomyomas (fibroids) diffusely replacing the myometrium, often leading to severe infertility due to distortion of the uterine cavity. Althoug…

AIM: Diffuse uterine leiomyomatosis (DUL) is characterized by numerous uterine leiomyomas within and diffusely replacing the myometrium. However, because of its rarity, the prevalence, diagnostic criteria, and standard treatment for patient…

BACKGROUND: Endometriosis-related pain encompassing dysmenorrhea, dyspareunia, and chronic pelvic pain, reduces the quality of life in premenopausal women. Although treatment options for endometriosis alleviate this pain, approximately one-…

Hypercoagulability associated with malignant tumors causes thrombosis, termed Trousseau's syndrome, but is rarely associated with benign gynecological tumors, such as myoma and adenomyosis. We herein report a 47-year-old Japanese woman with…

•A cul-de-sac endometrioid carcinoma adjacent to extraovarian endometriosis was identified during remission of endometrial cancer.•The origin of the cul-de-sac tumor was malignant transformation of deep infiltrating endometriosis.•Endometri…

Risk-reducing salpingo-oophorectomy for reducing future cancer risk in women with hereditary breast and ovarian cancer syndrome is rarely performed in Japan; therefore, the cancer pre-ventive effect of risk-reducing salpingo-oophorectomy fo…

BACKGROUND: Retinoic acid (RA) regulates key biological processes, including differentiation, apoptosis and cell survival. RA mediates induction of 17 beta-hydroxysteroid dehydrogenase type 2 mRNA, catalyzing the conversion of estradiol to …

Estradiol (E2) stimulates the growth and inflammation in the ectopic endometriotic tissue that commonly resides on the pelvic organs. Several clinical and laboratory-based observations are indicative of resistance to progesterone action in …

CONTEXT: Control of aromatase expression in uterine leiomyoma has significant clinical implications because aromatase inhibitors reduce tumor growth and associated irregular uterine bleeding. The mechanisms that regulate aromatase expressio…

Pathogenesis and growth of three common women's cancers (breast, endometrium and ovary) are linked to estrogen. A single gene encodes the key enzyme for estrogen biosynthesis named aromatase, inhibition of which effectively eliminates estro…