A National Survey of Umbilical Endometriosis in Japan
Abstract
STUDY OBJECTIVE To identify the clinical presentation, diagnostic evaluation, operative or medical management, and postoperative recurrence of umbilical endometriosis. DESIGN A retrospective national survey. SETTING Obstetrics and Gynecology and Plastic Surgery Departments at a teaching hospital in Japan. PATIENTS Patients with umbilical endometriosis or malignant transformation. INTERVENTIONS A national survey was conducted to identify and evaluate cases of umbilical endometriosis or malignant transformation documented between 2006 and 2016. MEASUREMENTS AND MAIN RESULTS The following were evaluated for each patient: age at diagnosis, body mass index, medical history, presence of extragenital endometriosis, surgical history, symptoms, imaging modalities, surgical therapy, hormonal therapy, follow-up period, postoperative recurrence, and time to recurrence. Ninety-six patients were identified with pathologically diagnosed benign umbilical endometriosis. The patients frequently had swelling (86.5%), pain (81.3%), or bleeding (44.8%) in the umbilicus. Sensitivity was 87.1% for physical examination, 76.5% for transabdominal ultrasonography, 75.6% for computed tomography, and 81.8% for magnetic resonance imaging. The cumulative recurrence rate was 1.34% at 6 months, 6.35% at 12 months, and 6.35% at 60 months after surgery. Importantly, there was no recurrence after wide resection including of the peritoneum (0 of 37 cases). The efficacy of dienogest (an oral progestin), gonadotropin-releasing hormone agonists, and oral contraceptives was 91.7%, 81.8%, and 57.1%, respectively. Finally, 2 cases of malignant transformation were identified. CONCLUSION There was a low recurrence rate following surgery, and hormonal treatment is an option, although the current findings suggest surgical therapy as the first choice of treatment for umbilical endometriosis.
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Many patients with umbilical endometriosis are diagnosed by physical examination and imaging modalities.
“Many patients with umbilical endometriosis are diagnosed by physical examination and imaging modalities.”
From Extra-pelvic endometriosis: a review. (2020) · cites this paper as [44]
Symptoms of swelling, pain, or bleeding at umbilical endometriosis lesions were present in 86.5%-90.9%, 80.5%-81.3%, or 44.8%-49.2% of cases, respectively.
“Symptoms of swelling, pain, or bleeding at the lesions were present in 86.5%‐90.9%, 80.5%‐81.3%, or 44.8%‐49.2% of cases, respectively.”
From Extra-pelvic endometriosis: a review. (2020) · cites this paper as [44]
In a survey of 96 patients pathologically diagnosed with umbilical endometriosis, 66.7% had no history of prior surgery.
“In a survey of 96 patients pathologically diagnosed with umbilical endometriosis, 66.7% had no history of prior surgery.”
From Extra-pelvic endometriosis: a review. (2020) · cites this paper as [44]
Among umbilical endometriosis, primary umbilical endometriosis is more frequent.
“Among umbilical endometriosis, primary umbilical endometriosis is more frequent.”
From Extra-pelvic endometriosis: a review. (2020) · cites this paper as [44]
No postoperative recurrence was reported in cases of radical surgery resected to the peritoneum for umbilical endometriosis.
“In particular, no postoperative recurrence was reported in cases of radical surgery resected to the peritoneum.”
From Extra-pelvic endometriosis: a review. (2020) · cites this paper as [44]
To date, four cases of malignant transformation of umbilical endometriosis have been reported.
“To date, four cases of malignant transformation have been reported.”
From Extra-pelvic endometriosis: a review. (2020) · cites this paper as [44]
The histological types of malignant transformation of umbilical endometriosis were clear cell carcinoma in one case, endometrioid carcinoma in one case, and adenocarcinoma in two cases.
“The histological types were clear cell carcinoma in one case, endometrioid carcinoma in one case, and adenocarcinoma in two cases.”
From Extra-pelvic endometriosis: a review. (2020) · cites this paper as [44]
In the authors' recent report, dienogest, a GnRH agonist, and OC were effective for improving symptoms in 91.7%, 81.8%, and 57.1% of umbilical endometriosis patients, respectively.
“In our recent report, dienogest, a GnRH agonist, and OC were effective for improving symptoms in 91.7%, 81.8%, and 57.1% of patients, respectively.”
From Extra-pelvic endometriosis: a review. (2020) · cites this paper as [44]
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- Authors
- Hirata, T., Koga, K., Kitade, M., Fukuda, S., Neriishi, K., Taniguchi, F., Honda, R., Takazawa, N., Tanaka, T., Kurihara, M., Nakajima, J., Horie, S., Nakai, H., Enomoto, T., Mandai, M., Narahara, H., Kitawaki, J., Harada, T., Katabuchi, H., Yoshimura, K., & Osuga, Y.
- Affiliations
- Tottori University (JP)
- Kumamoto University (JP)
- Juntendo University (JP)
- Nissan Tamagawa Hospital (JP)
- The University of Tokyo (JP)
- Kindai University (JP)
- Niigata University (JP)
- Kyoto University (JP)
- Oita University (JP)
- Kyoto Prefectural University (JP)
- Jichi Medical University (JP)
- Corresponding author
- Hirata, Tetsuya
- ORCID
- Venue
- Journal of Minimally Invasive Gynecology
- Publisher
- Elsevier BV
- Published
- 2020-01
- Volume
- 27
- Issue
- 1
- Pages
- 80-87
- ISSN
- 1553-4650 (ISSN-L)
- OpenAlex
- W2932205255
- Semantic Scholar
- 3a485f8d1e7a41e65f2c05cf1aa77bb7d5aa1eaa
- Cited by
- 40
- References
- 30
- Citations by year
- 2026: 1 · 2025: 9 · 2024: 11 · 2023: 5 · 2022: 8 · 2021: 2 · 2020: 4
- FWCI
- 3.35
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Minimally Invasive Gynecology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Ministry of Education, Culture, Sports, Science and Technology
- Japan Agency for Medical Research and Development
- Ministry of Health, Labour and Welfare
- Topics
- Health Sciences › Medicine › Reproductive Medicine › Endometriosis Research and Treatment
- Health Sciences › Medicine › Obstetrics and Gynecology › Gynecological conditions and treatments
- Health Sciences › Medicine › Obstetrics and Gynecology › Endometrial and Cervical Cancer Treatments
- Keywords
- umbilical endometriosis, postoperative recurrence, surgical management, wide resection, hormone therapy, dienogest, GnRH agonist, oral contraceptives, malignant transformation, diagnostic imaging, clinical features, Japan
- MeSH terms
- Adult, Endometriosis, Female, Humans, Japan, Middle Aged, Muscular Diseases, Postoperative Period, Surveys and Questionnaires, Recurrence, Retrospective Studies, Umbilicus, Treatment Outcome
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