Endometriosis: causes, symptoms, and classification

Endometriosis' is taken from the Greek work endon which means "within," metra, meaning "uterus" and osis, meaning "uncommon or sick state." Endometriosis is said to be very complicated and tiring gynecological sickness. This disease causes the functional endometrial stroma and glands grow outside of uterus that is usually present inside (the endometrium). These areas mostly consist of fallopian tubes, ovaries, gastrointestinal tract, rectovaginalseptum, bladder, pelvic peritoneum and unusually Pleura and pericardium. Endometriosis is a widespread disease most common in women who are in age of reproduction. This disease depends on estrogen and involves a chronic inflammatory component. Sampson was the first person to classify hemorrhagic ovarian lumps. He further explained these cysts as follicular, stromal, endometrial and corpus luteal. He also presented the endometrial hematomas based on thehistologic form. A number of categories have been formed after that, which is based on the histologic appearance, anatomic size, location and the growth level of endometrial tissue. This disease affects around seven million women in USA alone and more than 70 million women globally. According to the ASRM, the disease is classified as stage I-IV starting from minimal to minor, moderate and critical. It mostly causes infertility and soreness (Batt, 2011).

Signs and symptoms of Endometriosis

Indications of Endometriosis differ from person to person. The most common symptoms are severe pelvic pain, dyspareunia, dyschezia, dysmenorrhea, gastrointestinal uneasiness, dysuria and reduced libido. Two thirds of the women suffering from pelvic endometriosis experience these signs. Additionally, women with endometriosis are most expectedly going to suffer from cyclical leg pain as compared to those who do not suffer from this disease. However, the amount of pain between these two groups remains unchanged. Women with endometriosis usually face nerves firmness and penetration by the laceration. This often causes severe pain in patients with this disease. Ectopic endometrium contains nerves that are aroused by irritant elements peripheral afferent nerve fibers sense. This transfers the pain stimuli to central nervous structure to do sensory role. Other mediums that release the nerves are tachykinins, P, calcitonin, nitric oxide and gene-related peptide to perform sensory task. This function increases the local vascular permeability, and additionally results in neurogenic inflammation. Patients with endometriosis also commonly suffer from infertility. Endometriosis is usually unpredictable because the signs of this disease are usually found in other gynecological problems. This results in ignoring or not noticing many cases of endometriosis. Due to these issues, it takes 7 to 8 years of delay to confirm the diagnosis of this disease. Diagnoses are varied from patient to patient that include chronic pelvic pain, irritable bowel syndrome (IBS), pelvic congestion syndrome and pelvic inflammatory disease (PID) (Gupta, Harlev, & Agarwal, 2015).

Three major site of Endometriosis occurrence

Endometriosis is described as an unreasonable illness. In addition to the endometrial cavity, endometriosis is caused by the occurrence and production of ectopic endometrial tissue in sites. Endometriosis usually grows in the ovary, uterosacral ligaments and pouch of Douglas. Sometimes it is developed in the uterine cervix, colon, fallopian tubes, vagina, rectum, urinary bladder, and tract and vermiform appendix. Others are mostly produced in the pelvic cavity peritoneum and related deep tissue. Endometriosis is sometimes also detected in the distant organs including umbilicus, lymph nodes, lung and pudendum. It often grows in the tissues that are outside of pelvis and have varied symptoms depending on the area of development of disease. This includes bleeding or pain related to the menstrual cycle. Endometriosis is rarely found in males. However, there were many cases of men suffering from prostate cancer and who were being treated with high quantity of estrogens. In such circumstances, an overgrown change of the mu llerian remnants was detected in the prostate (Harada, 2014).

Underlying problems of Endometriosis

There are many dangerous impacts linked with endometriosis. Few of them include early menstruation in age less than or equal to 11 years, occurrence of menstrual cycle in less than 26 or 27 days, menorrhagia which means bleeding more than 7 days or 80 ml. Higher risk factors include low weight at birth, nulliparity and overweight of body. Most of these risk elements are related either with higher level of estrogens or extended menstruation cycle. This supports the dependence of estrogen on endometriosis and relationship between menstruation and endometriosis. Other factors related to endometriosis considered dangerous include late menopause and prolonged stages of ovulation. Throughout the ovulation process, estradiol discharge increases which leads to the increase in cell proliferation and endometriotic tissue implantation survival. Endometriosis responds to the increased estrogen and low levels of progesterone. The disease often has a polygenic inheritance and genetic tendency with higher chances of disease developed in blood relatives as also in monozygotic twins. Risks of this disease are also increased by stubborn inflammatory status, exposing to environmental contaminants, immunologicaldys regulation and/or epigenetic alterations. Certain elements that help in controlling ovulation also reduce the estrogen levels and in result, decreasing the risks of disease (Gupta, Harlev, & Agarwal, 2015).

Dysfunctional uterine bleeding caused by hormonal change

The capacity of endometrial cells to spread, attributed to the mesothelium, and/or escape immune-mediated clearance is affected by the change in hormones. Sex steroids that also include estradiol (E2) are often present intracellularly in patients suffering from endometriosis. Aromatase, which is precisely articulated in endometrial tissue and transforms androstenedione to estrone (E1). E1 is sequentially changed to E2 by 17?-hydroxysteroid dehydrogenase (17?-HSD) type 1. Another form is 17?-HSD type 2, which transform E2 to E1 for E2 regulation, is formed in the normal endometrium, but not articulated in tissues of patients with endometriosis, with a subsequent rise in the local mediation of E2. Additionally, there is a clear indication for backing the P profile's confrontation in the pathophysiology of endometriosis. In the absence of P Receptor-B, endometriotic abrasions display an overall decrease in P receptor appearance comparative to eutopic endometrium. In addition to that, endometrial appearance outlining has accepted dysregulation of P-responsive RNA in the luteal stage. A partial conversion of endometrium from the proliferative phase to secretory has substantial molecular implantation of refluxed endometrial cells (Harada, 2014).

Endometriosis: externa vs. interna

There are two varied forms of endometriosis. The first form is Endometriosis genitalis interna that is also called Adenomyosis uteri et tubae. In the process of endometriosis genitalis interna, the endometriosis is passed through small wall mediums into the uterus muscle: myometrium, or to the fallopian tubes. The occurrence rate of such cases is 31 to 47%. Other form of endometriosis is endometriosis genitalis externa. These are the endometriosis masses that have developed into the several pelvis organs such as douglas, uterus bands and ovaries. The frequency of such cases is 30% of all endometriosis. Third unusual type is endometriosis extragenitalis, which consists of non-genital organs such as ureters, lungs, intestine and liver. Endometriosis cannot be categorized into three types as endometriosis interna and externa are practically not separable. The latter form of endometriosis extragenitalis is very rare but also the most hazardous type of endometriosis (Muzii, Catalano, & Marana, 1997).

Course of treatments for Endometriosis

There are mainly two ways to treat endometriosis: surgical and pharmacological. Both the methods, independently, do not completely cure endometriosis because the origin of this disease is not fully discovered. However, these treatments are only used as a relief or improving the chances of fertility. Therefore, it must be considered how the options of treatment help in reducing pain levels in patients and affecting infertility. One should also examine whether the treatments can improve the quality of life of endometriosis patients. Medical therapy is considered as an experimental treatment, usually adopted to reduce the level of pain temporarily. The pharmacological treatment has very less effect on the fertility. On the other hand, surgical treatment helps in treating both pain and fertility problems. Surgical treatment is the choice for ovarian endometriomas, generally because of ineptness of pharmacological treatment in these cases. However, ovarian surgery lessens the ovarian reserve and additionally impose implications which are long-term and not very well-known. There are numerous pharmacological mediators used in treating endometriosis. These include anti-progestogens, oral contraceptives, GnRH agonists, aromatase inhibitors, progestogens, danazol and non-steroidal anti-inflammatory agents. In a case where chronic pelvic pain which is main symptom of this disease, empirical treatment is started even before the endometriosis is detected (Romer, 2012).

The main purpose of surgical treatment is to eliminate endometriomas from the body, lessen the pain, while also helping improve fertility rate through adhesiolysis. Laparoscopy is said to be the most favorable surgical method to treat this disease. This treatment has many benefits that include shorter hospital stays, speedy recovery, and little use of analgetic agents and reduced costs. Laparoscopy also creates less damage to ovarian reserve of patient when ovarian process is initiated afterwards. Infertility and subfertility are usually linked with endometriosis. Many procedures have been introduced to describe the relationship between infertility and endometriosis. These include oocyte recovery trouble in severe endometriosis, inflammation, poor quality of egg, reduced ovarian reserve, and reduced rates of implantation. Even though the surgical and medical treatment procedures can reduce the symptom to get severe, they also have very less effect on infertility. Reports have also shown the negative correspondence between sternness of endometriosis and reduced pregnancy rates. Therefore, these aspects can be controlled with the use of supportive reproductive methods (Brown & Farquhar, 2015).