IMR Press / CEOG / Volume 50 / Issue 9 / DOI: 10.31083/j.ceog5009183
Open Access Original Research
Modified Laparoscopic Inverted Triangle Model for Extended Lesion Resection in the Treatment of Symptomatic Localized Adenomyosis in Women Who Have Completed Childbirth
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1 Department of Gynecology, The Affiliated Changzhou Second People's Hospital of Nanjing Medical University, 213000 Changzhou, Jiangsu, China
2 Division of Life Sciences and Medicine, Department of Gynecology, The First Affiliated Hospital of the University of Science and Technology of China, University of Science and Technology of China, 230031 Hefei, Anhui, China
*Correspondence: (Jiming Chen); (Bairong Xia); (Bingying Lu)
These authors contributed equally.
Clin. Exp. Obstet. Gynecol. 2023, 50(9), 183;
Submitted: 21 March 2023 | Revised: 8 June 2023 | Accepted: 20 June 2023 | Published: 5 September 2023
Copyright: © 2023 The Author(s). Published by IMR Press.
This is an open access article under the CC BY 4.0 license.

Background: To evaluate the clinical efficacy and safety of the modified laparoscopic inverted triangle model for extended lesion resection in treating dysmenorrhea focal adenomyosis in women who have completed childbirth. Methods: A total of 52 patients with dysmenorrhea focal adenomyosis treated in the Department of Gynecology of the Affiliated Changzhou Second People’s Hospital of Nanjing Medical University from July 2014 to August 2020 were retrospectively analyzed. They underwent the modified laparoscopic inverted triangle model for extended lesion resection. The scope of resection included the focal adenomyosis lesions and along with part of the surrounding normal myometrial tissue and endometrium in order to ensure full resection of adenomyosis lesions without residual. Surgical outcome and adverse effects on ovarian functions were evaluated through the retrospective analysis compared the changes of dysmenorrhea visual analog scale (VAS) score changes, uterine volume changes, changes in serum CA125 level, and serum anti-mullerian hormone (AMH) level changes prior to surgery as well as 3, 6, 12, and 24 months after surgery. Results: All operations were completed by laparoscopy without conversion to laparotomy. No serious complications occurred during or after surgery. The dysmenorrhea VAS score, uterine volume, and serum CA125 level at 3, 6, 12, and 24 months after surgery were significantly lower than baseline and the difference was statistically significant. The serum AMH level showed a downward trend 3 months after surgery compared with the pre-surgery level, but the difference was not statistically significant (p = 0.27). The response rates at 3, 6, 12, and 24 months after surgery were 98.1%, 98.1%, 96.1%, and 88.5%, respectively, and the complete response rates were 30.8%, 34.6%, 34.6%, and 21.1%, respectively. Conclusions: Modified laparoscopic inverted triangle model for extended lesion resection is a safe and effective conservative surgical method for treating dysmenorrhea focal adenomyosis.

focal adenomyosis
modified laparoscopic inverted triangle model
extended lesion resection
conservative surgery
2022CZBJ074/Changzhou High-Level Medical Talents Training Project
RC202101/maternal and child health key talent project of Jiangsu Province
F202138/maternal and child health research project of Jiangsu Province
2019K064/Scientific Research Support Program for Postdoctoral of Jiangsu Province
BRA2019161/Scientific Research Support Program for “333 Project” of Jiangsu Province
Fig. 1.
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