is a type of cyst formed when endometrial tissue  grows in the ovaries.
1 2 2 1. Endometrial cysts are also called endometriomas or chocolate cysts, because they are filled with dark blood resembling chocolate syrup. They're a result of a condition know as endometriosis. Endometriosis occurs when pieces of tissue break away from the uterine lining and become attached to organs outside the uterus.  Endometriosis is a benign condition. Endometrial tissue (the tissue that lines the uterus) grows outside the uterine cavity and can attach itself to reproductive or abdominal organs. The patches of endometrial tissue swell with blood during menstruation as if they were still in the uterus, causing severe pain.  Uterine cysts can cause pain in the abdominal region. A hysterectomy is a last resort surgery for a uterine cyst sufferer. If left untreated, a uterine cyst may cause persistent pain. Most uterine cysts are not cancerous and may not require treatment. Doctors diagnose uterine cysts with various imaging studies. Uterine cysts may cause prolonged menstrual bleeding. An endometrioma, endometrioid cyst, endometrial cyst, or chocolate cyst of ovary is a condition related to endometriosis. It is caused by endometriosis, and formed when a tiny patch of endometrial tissue (the mucous membrane that makes up the inner layer of the uterine wall) bleeds, sloughs off, becomes transplanted, and grows and enlarges inside the ovaries. pathological hyperplasia of endometrium, as distinct from the physiological state, due in most instances to excessive and prolonged estrogenic stimulation; characterized by thickening of the endometrium, development of mucus-filled glands and the accumulation of mucus in the lumen of the uterus. pertaining to or emanating from the endometrium. endometrial biopsy. punch biopsy specimens obtained in the mare and cow by passing the instrument through the cervix and controlling the site of the biopsy by a hand in the rectum. A common complication of endometriosis is the development of a cyst on an ovary. This blood-filled growth is called an ovarian endometrioma or an endometrial cyst. Endometriomas can be as small as 1 mm or more than 8 cm across. The symptoms of an ovarian cyst may be the same as those of endometriosis. Also, ovarian cancer risk is slightly higher in women who have endometriosis. Another concern with endometrial cysts is bursting. A large cyst has a higher risk of rupture, which would spill the cyst’s contents into the pelvis and onto the surface of the uterus, bladder, bowel, and the corresponding spaces between. Ovarian cysts can be classified into two major distinctive groups – Functional and Complex. Non-functional or complex ovarian cysts develop for reasons that are not associated with normal functions of the female menstrual process. One example of a complex ovarian cyst is an endometrioma. Endometriomas are a type of cyst caused by endometriosis. Endometriosis is a condition where endometrial tissue, the mucous membrane that makes up the inner layer of the uterine wall, begins to grow in parts of the body other than the womb A uterine cyst, also called a uterine fibroid, myoma, or fibromyoma, is a growth in the uterus. These growths are very common and up to 75 percent of women at some point during their child-bearing years. If left untreated, a uterine cyst may cause persistent pain. Most uterine cysts are not cancerous and may not require treatment. Doctors diagnose uterine cysts with various imaging studies. Uterine cysts may cause prolonged menstrual bleeding. Endometrioma: : Part of the condition known as endometriosis. Endometrioma is a type of cyst formed when endometrial tissue (the mucous membrane that makes up the inner layer of the uterine wall) grows in the ovaries. It affects women during the reproductive years and may cause chronic pelvic pain associated with menstruation
http://ezinearticles.com/?Endometrial-Cysts---Diagnosis-and-Treatment-of-Endometrial-Chocolate-Cysts&id=3653109 http://www.hopkinsmedicine.org/signature_obgyn/conditions_treatments/gyn_specialization/gynecologic_surgery/endometriosis_ovarian_cysts_tubal_disease.html http://www.wisegeekhealth.com/what-is-a-uterine-cyst.htm https://en.wikipedia.org/wiki/Endometriosis_of_ovary http://medical-dictionary.thefreedictionary.com/endometrial+cyst http://www.webmd.com/women/endometriosis/endometriosis-what-happens http://naturalovariancystrelief.org/endometrial-cysts/ http://www.wisegeekhealth.com/what-is-a-uterine-cyst.htm http://www.medicinenet.com/script/main/art.asp?articlekey=89206
what is a endometrial cyst