Endometrial Pathology

Endometrial Pathology

If inadequate luteal phase is suspected and is desired to be confirmed histologically, the biopsy should be taken between the 21st and 23rd cycle days to demonstrate a 3- to 4-day delay in endometrial maturation. Impaired maturation is presumably due to the poor development of the corpus luteum. This in turn results in a decrease of circulating progesterone levels, which are then not sufficient to promote full secretory differentiation of the endometrium. A repeat biopsy taken during the same period of the following cycle will further confirm an abnormally short corpus luteum life span. In cases of clinical membranous dysmenorrhea, the endometrial biopsy should be taken on cycle days 5 to In these instances, the histologic specimens contain large fragments casts of endometrium, often with focal Arias-Stella reaction, or star-shaped glands with dense stroma alternating with foci of normal menstrual endometrium. Such a condition, also called irregular shedding, is presumably associated with a persistent corpus luteum from a recent or remote intrauterine or ectopic pregnancy and with relatively increased blood progesterone levels.

Endometrial curettage

El Nashar, Althawra St. Endometrial receptivity is a temporally unique sequence of factors that make the endometrium receptive to embryonic implantation. Implantation window is a period during which the endometrium is optimally receptive to implanting blastocyst D postovulation. No conclusive evidence of age related histological changes in the endometrium.

The biochemical markers of endometrial receptivity include endometrial adhesion molecules e.

The authors defined the differences in endometrial dating, as follows: for the R group, histological dating other than the postovulatory day (POD) 5; for the NR group, histological dating that was different from the result of the ERA (ie histologically POD 5 in spite of the ERA diagnosis of NR).

Leon speroff, Marc AF. Clinical gynecologic endocrinology and infertility: Lippincot Williams and Wilkins The significance of dating on endometrial biopsy for the prognosis of the infertile couple. S the luteal phase defect fertile steril ; Dating the endometrial biopsy. Fertile Sterile ; 1: Dallenbach- Hellwag, Histopathology of the endometrium.

Obstretical and Gynaecological Pathology

Endometrium: Secretory phase

Back to Top Article Outline What are pinopodes? Pinopodes are smooth mushroom or balloon-like projections that arise from the apical surface of the luminal epithelium of the endometrium in mice, rats and humans 2. They arise during the window of receptivity and are best viewed using scanning electron microscopy 3. Other investigators 5 have reported that, during receptivity, the hair-like epithelial cell microvilli transiently fuse to a single flower-like membrane projection, the pinopode.

Back to Top Article Outline Pinopodes or uterodomes? Uterodomes is the name proposed by researchers 6 to describe protrusions of the apical plasma membrane of uterine epithelial cells.

the serum progesterone as well as the endometrial histology. THE ONLY positive evidence that ovulation has really occurred in a woman is the recovery of an ovum or the occurrence of pregnancy. Presently. recovery of an ovum can only be achieved by laparoscopy or laparotomy. These cannot be.

This technique allows for the most thorough sampling of the endometrium but requires anesthesia for cervical dilation. The curette is drawn across the anterior and posterior endometrial surfaces, scraping the tissue free. Fractional sampling is especially useful for evaluating possible endocervical pathology, such as extension of endometrial adenocarcinoma to the endocervix. Preview Unable to display preview.

Diagnostic dilation and curettage. Am J Obstet Gynecol ;

Endometrial cycle histology

Accessed November 9th, Diagrams Phases Proliferative phase: Early proliferative endometrium Mid proliferative days 8 – Mid proliferative endometrium and Ki67 staining Late proliferative days 11 – Day 10 – 12 endometrium shows glands that are more tortuous and crowded; intraglandular nuclear pseudo- stratification and mitotic activity are more prominent see inset and the stroma is edematous and mitotically active Ovulation:

Nevertheless, accurate endometrial dating provides important clinical and pathological information regarding the occurrence of ovulation or the presence of a lag in the development of secretory glands (i.e., a luteal phase defect which is a common cause of dysfunctional uterine bleeding). 6 x 6 McNeely, M.J. and Soules, M.R.

References Abstract Over the last decade, research to improve success rates in reproductive medicine has focused predominantly on the understanding and optimization of embryo quality. However, the emergence of personalized medicine in ovulation induction and embryology has shifted the focus to assessing the individual status of the endometrium. The endometrium is considered receptive during an individually defined period, the window of implantation WOI , when the mother permits a blastocyst to attach and implant.

This individual receptivity status can now be objectively diagnosed using the endometrial receptivity array ERA developed in The ERA, together with a computational algorithm, detects the unique transcriptomic signature of endometrial receptivity by analyzing differentially expressed genes and reliably predicting the WOI. We and others have illustrated the utility of this personalized diagnostic approach to discriminate between individual physiological variation in endometrial receptivity and unknown endometrial pathology, deemed as causal in recurrent implantation failure RIF.

NCT is underway to determine the clinical value of this endometrial diagnostic intervention in the work-up for reproductive care. In this review, we analyse the current clinical practice in the diagnosis of the endometrial factor together with new avenues of research. The most investigated element in the implantation triad is the embryo, which seeks to adhere to the endometrial epithelium and invade the decidualized stroma, initiating trophoblast invasion and placentation. Indeed, the understanding of human pre-implantation development is critical for review see [ 2 ] , as are the soluble ligands produced and received by their receptors to mediate this fundamental process for review see [ 3 ].

However, research to develop an understanding of the endometrial component of implantation has been largely neglected.

Thieme E

Usually, when cells grow old or get damaged, they die , and new cells take their place. Cancer starts when new cells form unneeded, and old or damaged cells do not die as they should. The buildup of extra cells often forms a mass of tissue called a growth or tumor. These abnormal cancer cells have many genetic abnormalities that cause them to grow excessively.

When a mutant version of p53 is overexpressed, the cancer tends to be particularly aggressive. Serous carcinomas are thought to develop from endometrial intraepithelial carcinoma.

Endometrial dating and the window of implantation A normal, ovulatory menstrual cycle (natural, spontaneous cycle) has approximately the same length in each cycle, but .

Proliferative Phase Proliferative phase change. The glands are simple appearing as circles in cross-section. Mitotic activity is conspicuous. In the endometrium, proliferative activity occurs even before the complete cessation of menstruation, i. The glands at this earlier stage are relatively straight or, at most, slightly coiled and are found within relatively loose endometrial stroma. As the name suggests, there is brisk cell division with prominent mitotic activity in both the glands and the stroma.


Every patient is different and what Bob and Juancho suggested may or may not work. The issue is whether this endometrium has got enough progesterone receptors to decidualize and allow the embryo to implant. If the molecular analysis tells me that the endometrium is receptive, I have ethical reasons to proceed with embryo replacements.

Normal Histology of the Female Genital Tract (1) Skene’s duct Skene’s glands Vagina Histology Cervix Histology Endocervix Exocervix Transformation zone Endometrium Histology Endometrial dating Myometrium Histology Fallopian tube Histology Ovary Histology Placenta Histology. .

Adapted from Witkin et al. Unsuspected Chlamydia trachomatis infection and in vitro fertilization outcome. Am J Obstet Gynecol Nongonococcal-nonchlamydial salpingitis may also arise de novo as a primary infection. There is less fever, vaginal discharge, and liver tenderness than with gonococcal PID. Despite these differences, the clinical presentation does not adequately distinguish between the two, and reliance on culture is necessary. Except for the presence of N.

As shown in Table 1 , the cervix and vagina of healthy women contain an abundance of aerobic and anaerobic microorganisms. There may be a critical number of organisms needed to overwhelm local host defense mechanisms in the cervix, allowing an infection to ascend to the upper genital tract.

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We reviewed the histopathologic slides from 29 patients who had endometrial echogenic foci on pelvic ultrasound and found many endometrial microcalcifications. The extent of microcalcifications in each specimen was graded on a semiquantitative scale from 0 to 3. The mean patient age was 54 years range, years.

The specimens included endometrial biopsies, curettages, and hysterectomies. Most of the patients had presented with abnormal vaginal bleeding. The most frequent endometrial types were atrophic

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To analyze concentrations of endometrial leukocytes in patients with idiopathic-repeated abortions. Materials and methods Biopsies of exactly dated secretory endometrium in 25 patients with idiopathic-repeated abortions and 10 control patients without a history of miscarriage were compared with respect to the concentrations of T-helper cells CD4 , cytotoxic T-cells CD8 , B-cells CD19 and uterine natural killer cells CD56 by immunohistochemistry and RNase protection assays.

Results All examined cells were detectable within secretory endometrium. No statistically significant differences of the examined immune-cell concentrations were seen between the control group and the repeated miscarriage group by either test. Conclusion This study suggests that the concentrations of specific endometrial leukocytes in a non-pregnant cycle are not associated with repeated pregnancy loss. Thus, the hypothesis of an altered endometrial immunity in patients with repeated miscarriages, symbolized by persistently differing local immune-cell concentrations, has to be questioned.

Keywords Notes Acknowledgments We would like to thank Ms. Julia Jauckus, who contributed substantially to the accurate performance of the experiments. Conflict of interest statement We declare that we have no conflict of interest.

Endometrial Pathology