A Survey on Efficacy and Safety in Patients With Endometriosis

This survey is intended to collect efficacy and safety data of Duphaston® Tablets in patients with endometriosis under actual condition of its use and to obtain data for effectively and safely utilizing this drug.

In Japan, Duphaston® Tablets have appeared in 1965 for the treatment of endometriosis and been used at some medical institutions. However, after releasing of danazol in the early 1980's and gonadotropin-releasing hormone (GnRH) agonists in the late 1980's, pseudomenopause therapy became mainstream because of its high efficacy. However, pseudopregnancy therapy was recognized again due to adverse reactions associated with pseudomenopause therapy. After 2000, low-dose estrogen/progestin (LEP) combination drugs (as LEP products, ethinylestradiol/norethisterone combination drug and ethinylestradiol/drospirenone combination drug) and dienogest have been utilized as drugs that are safer and can be administered for a long time. In recent years, Duphaston® Tablets are increasing recognized again from the viewpoints of its efficacy and safety because the drug has no effect to inhibit ovulation or effect on basal body temperature, a diagnosis of ovulation and other conditions may be made by following up basal body temperature, and pregnancy may be achieved even during treatment with Duphaston. As previously mentioned, Duphaston® Tablets are an old drug, and there are only few clinical data from Japanese patients; thus, its latest clinical efficacy and safety data are being demanded again mainly by obstetrician-gynecologists.

Eligibility Criteria:
Inclusion Criteria:

* Women aged 20 to \< 50 years
* Subjects with a chocolate cyst of the ovary measuring 3 cm in diameter on transvaginal ultrasonography at patient enrollment
* Subjects with a menstrual cycle of 25 to 38 days who ovulate and are confirmed to have normal menstruation at patient enrollment

Exclusion Criteria:

* Subjects who used GnRH agonists within 6 months before patient enrollment
* Subjects who utilized hormone preparations containing corpus luteum hormone or estrogen as an active ingredient, low-dose contraceptive pills, middle-dose contraceptive pills, testosterone derivatives, or herbal products indicated for endometriosis within 3 months before patient enrollment
* Subjects who received surgical treatment for endometriosis such as transvaginal alcohol fixation, laparotomy or laparoscopic surgery within 2 months before patient enrollment
* Subjects who are pregnant or may possibly be pregnant at patient enrollment
* Subjects who are in breast feeding at patient enrollment
* Subjects who are determined by the investigator/subinvestigator to be not suitable for the subjects of the survey because of other reasons
* Subjects with liver disorder or liver disease
* Subjects with known hypersensitivity to the active substance or to any of the excipients
* Subjects with known or suspected progestogen dependent neoplasms (e.g. meningioma)
* Subjects with undiagnosed vaginal bleeding
* Subjects with a past or current history of heart or kidney disease
* Subjects with porphyria
* Subjects with depression
* Subjects with abnormal liver function values caused by acute or chronic liver disease
* Subjects with rare hereditary problems of galactose intolerance, Lapp lactase deficiency or glucosegalactose malabsorption