46-year-old Caucasian woman with mental retardation experienced discomfort and irregular menstrual bleeding, which had been increasing for 2 years. The physician from her group home sent her to a gynecologist, where a mass prolapsing through the cervix was noted on physical examination. Cervical and endometrial biopsies were done. Both showed polypoid fragments of endometrium with complex hyper...

Stem cell transplantation, which is based on the application of mesenchymal stem/stromal cells (MSCs), is a rapidly developing approach to the regenerative therapy of various degenerative disorders characterized by brain and heart failure, as well as skin lesions. In comparison, the use of stem cell transplantations to treat infertility has received less attention. One of the causes of miscarri...

A new, simple experimental endometriosis model was established by auto-transplanting endometrial tissue fragments beneath kidney capsules in female rats. The transplanted endometrial tissue grew well, forming a fluid-filled cyst, which reached maximal size 2 to 3 weeks after transplantation. The growth and maintenance of the transplants was dependent on the ovary: ovariectomy induced regression...

Endometriosis, a common cause of pelvic pain and female infertility, depends on the growth of vascularized endometrial tissue at ectopic sites. Endometrial fragments reach the peritoneal cavity during the fertile years: local cues decide whether they yield endometriotic lesions. Macrophages are recruited at sites of hypoxia and tissue stress, where they clear cell debris and heme-iron and gener...

Incidental diagnosis of endometrial carcinoma after the operation for presumed benign disease is rare. At present, there are no recognized guidelines on optimal management of uterine malignancy diagnosed after incomplete surgery for other indications and the reported experience is limited. Although the risk of histological diagnosis of endometrial carcinoma in the uterus removed for pre-operati...

In vitro responsiveness of endometrial adenocarcinoma to progestins was evaluated histologically by incubation of tissue fragments in medium containing 10(-6) M medroxyprogesterone acetate. In a series of 19 experiments, formation of sub- and supranuclear vacuoles, which reflects accumulation of glycogen in response to medroxyprogesterone acetate added to the medium, was observed in well-preser...

Preparation for embryo implantation requires extensive adaptation of the uterine microenvironment. This process consists of cell proliferation and cell differentiation resulting in the transformation of endometrial fibroblasts into a new type of cell called decidual cell. In the present study, we followed the space-time distribution of versican and hyaluronan (HA) in different tissues of the ut...

Endometriosis is an estrogen-dependent inflammatory disorder characterized by the presence of endometrial tissue outside the uterine cavity. Patients experience chronic pelvic pain and infertility, with the most likely origin of the tissue deposits (lesions) being endometrial fragments shed at menses. Menstruation is an inflammatory process associated with a dramatic increase in inflammatory me...

In vitro responsiveness of endometrial adenocarcinoma to progestins was evaluated histologically by incubation of tissue fragments in medium containing 10~6 M medroxyprogesterone acetate. In a series of 19 experiments, formation of suband supranuclear vacuoles, which reflects accumulation of glycogen in re sponse to medroxyprogesterone acetate added to the medium, was observed in well-preserved...

endometrial calcification along with ossification is an uncommon clinical entity. most of the cases are asymptomatic or present with secondary infertility. endometrial ossification associated with repeated abortions has been reported very infrequently. here we report a case of endometrial calcification with ossification  due to retained fetal bony tissue in a 38 year old symptomatic female havi...