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ovarian cyst : ウィキペディア英語版
ovarian cyst


An ovarian cyst is any fluid-filled sac within the ovary. Often they cause no symptoms. Occasionally they may produce bloating, lower abdominal pain, or lower back pain. If the cyst either breaks open or causes twisting of the ovary severe pain may occur. This may result in vomiting or feeling faint. The majority of cysts are, however, harmless.

Most ovarian cysts are related to ovulation being either follicular cysts or corpus luteum cysts. Other types include cysts due to endometriosis, dermoid cysts, and cystadenomas. Many small cysts occur in both ovaries in polycystic ovarian syndrome. Pelvic inflammatory disease may also result in cysts. Rarely cysts may be a form of ovarian cancer. Diagnosis is undertaken by pelvic examination with an ultrasound or other testing used to gather further details.〔

Often cysts are simply observed over time. If they cause pain, medications such as paracetamol (acetaminophen) or ibuprofen may be used. Hormonal birth control may be used to prevent further cysts in those who are frequently affected.〔 However, evidence does not support birth control as a treatment of current cysts. If they do not go away after several months, get larger, look unusual, or cause pain they may be removed by surgery.〔

Most women of reproductive age develop small cysts each month. Large cysts that cause problems occur in about 8% of women before menopause.〔 Ovarian cysts are present in about 16% of women after menopause and if present are more likely to be cancer.〔
==Signs and symptoms==
Some or all of the following symptoms may be present, though it is possible not to experience any symptoms:〔
* Abdominal pain. Dull aching pain within the abdomen or pelvis, especially during intercourse.
* Uterine bleeding. Pain during or shortly after beginning or end of menstrual period; irregular periods, or abnormal uterine bleeding or spotting.
* Fullness, heaviness, pressure, swelling, or bloating in the abdomen.
* When a cyst ruptures from the ovary, there may be sudden and sharp pain in the lower abdomen on one side.
* Change in frequency or ease of urination (such as inability to fully empty the bladder), or difficulty with bowel movements due to pressure on adjacent pelvic anatomy.
* Constitutional symptoms such as fatigue, headaches
* Nausea or vomiting
* Weight gain
Other symptoms may depend on the cause of the cysts:〔
* Symptoms that may occur if the cause of the cysts is polycystic ovarian syndrome (PCOS) may include increased facial hair or body hair, acne, obesity and infertility.
* If the cause is endometriosis, then periods may be heavy, and intercourse painful.
The effect of cysts not related to PCOS on fertility is unclear.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「ovarian cyst」の詳細全文を読む



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