Cited by 197Endometriosis Research and TreatmentEctopic Pregnancy Diagnosis and ManagementGynecological conditions and treatments

Treatment of symptomatic rectovaginal endometriosis with an estrogen–progestogen combination versus low-dose norethindrone acetate

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Vercellini, Paolo, Pietropaolo, Giuliana, De Giorgi, Olga, Pasin, Roberta, Chiodini, Annalisa, Crosignani, Pier Giorgio·2005·Fertility and Sterility

Abstract

Objective To evaluate the efficacy, safety, and tolerability of an estrogen-progestogen combination versus low-dose norethindrone acetate in the treatment of persistent pain after surgery for symptomatic rectovaginal endometriosis.Design Randomized controlled trial.Setting Academic center.Patient(s) Ninety women with recurrent moderate or severe pelvic pain after unsuccessful conservative surgery for symptomatic rectovaginal endometriosis.Intervention(s) Twelve-month, continuous treatment with oral ethinyl E2, 0.01 mg, plus cyproterone acetate, 3 mg/day, or norethindrone acetate, 2.5 mg/day.Main outcome measure(s) Degree of satisfaction with therapy.Result(s) Seven women in the ethinyl E2 plus cyproterone acetate arm and five in the norethindrone acetate arm withdrew because of side effects (n=5), treatment inefficacy (n=6), or loss to follow-up (n=1). At 12 months, dysmenorrhea, deep dyspareunia, nonmenstrual pelvic pain, and dyschezia scores were substantially reduced without major between-group differences. Both regimens induced minor unfavorable variations in the serum lipid profile. According to an intention-to-treat analysis, 28 (62%) out of 45 patients in the ethinyl E2 plus cyproterone acetate group and 33 (73%) out of 45 in the norethindrone acetate group were satisfied with the treatment received.Conclusion(s) Low-dose norethindrone acetate could be considered an effective, tolerable, and inexpensive first-choice medical alternative to repeat surgery for treating symptomatic rectovaginal endometriotic lesions in patients who do not seek conception.

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Crossref · 10.1016/j.fertnstert.2005.03.083

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  • Low-dose oral NETA (2.5 mg/day) is effective, tolerable, and inexpensive as a first choice for symptomatic rectovaginal endometriosis, significantly decreasing VAS scores for dysmenorrhea and dyspareunia.

    “Low-dose NETA 2.5 mg/day orally is considered an effective, tolerable and inexpensive first choice for symptomatic rectovaginal endometriosis, significantly decreasing VAS scores for dysmenorrhea and dyspareunia [209].”

    From Hormonal treatments for endometriosis: The endocrine background (2022) · cites this paper as [209]

    The Abstract describes oral norethindrone acetate (NETA) 2.5 mg/day as an effective, tolerable, inexpensive first-choice medical alternative to repeat surgery, but limits that conclusion to patients with symptomatic rectovaginal endometriosis who do not seek conception. The Results report statistically significant within-group reductions in visual analog scale pain scores, including dysmenorrhea and deep dyspareunia. The citing sentence omits the qualification on who the first-choice recommendation applies to. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Reported response rates for therapy with 2.5 mg norethindrone acetate per day in endometriosis-associated pain range between 74 and 92%.

    “Reported response rates for therapy with 2.5 mg norethindrone acetate per day in endometriosis-associated pain range between 74 and 92%.”
  • Evidence for hormonal treatment specifically in rectovaginal endometriosis is less abundant, and only one randomised-controlled trial was identified in the literature.

    “Evidence for hormonal treatment specifically in RVE is less abundant and only one randomised-controlled trial was identified in the literature [29].”
  • The proportion of endometriosis patients satisfied with OC treatment is ≥65%.

    “Based on our previous experience, the proportion of endometriosis patients satisfied with OC treatment is $65% (20,57).”
  • In a randomized trial of symptomatic rectovaginal endometriosis, NETA 2.5 mg/d and an EP combination were equally effective in managing pain symptoms and reducing lesion size at ultrasound.

    “Both treatments were equally effective in the management of pain symptoms and on the reduction of lesion size at ultrasound.”

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Authors
Vercellini, P., Pietropaolo, G., De Giorgi, O., Pasin, R., Chiodini, A., & Crosignani, P. G.
Affiliations
University of Milan (IT)
Corresponding author
Vercellini, Paolo
Venue
Fertility and Sterility
Publisher
Elsevier BV
Published
2005-11
Volume
84
Issue
5
Pages
1375-1387
ISSN
0015-0282 (ISSN-L)
OpenAlex
W2062896185
Cited by
197
References
28
Citations by year
2026: 4 · 2025: 5 · 2024: 7 · 2023: 3 · 2022: 5 · 2021: 8 · 2020: 13 · 2019: 6 · 2018: 18 · 2017: 13 · 2016: 9 · 2015: 13 · 2014: 14 · 2013: 9 · 2012: 15
FWCI
6.68
Type
journal article
Language
en
Open access
Locations
  • Fertility and Sterility (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Endometriosis Research and Treatment
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Ectopic Pregnancy Diagnosis and Management
  • Health Sciences › Medicine › Obstetrics and Gynecology › Gynecological conditions and treatments
Keywords
rectovaginal endometriosis, norethindrone acetate, ethinyl estradiol, cyproterone acetate, dysmenorrhea, dyspareunia, dyschezia, treatment satisfaction, lipid profile
MeSH terms
Norethindrone Acetate, Adolescent, Adult, Drug Therapy, Combination, Endometriosis, Estrogens, Female, Humans, Middle Aged, Norethindrone, Pain Measurement, Progestins, Rectal Diseases, Vaginal Diseases, Estrogen Replacement Therapy, Confidence Intervals, Statistics, Nonparametric

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