A CASE OF UMBILICAL ENDOMETORIOSIS UNDERGOING OMPHALOPLASTY USING A FREE SKIN FLAP

Shozo Sako, Hiroshi Isozaki, Hitoshi Hara, Keizo Fujii, Kanji Nishiguchi, Nobuhiko Tanigawa
In: Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) · 1998 · vol. 59(5) , pp. 1385–1388 · doi:10.3919/jjsa.59.1385 · W2327771562
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⚙ AI-generated summary by claude@2026-06, 2026-06-08 ⓘ

This case report details a 46-year-old woman diagnosed with umbilical endometriosis, treated with tumor excision and omphaloplasty, with the findings supporting vascular or lymphatic dissemination as a potential histogenesis.

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This paper reports a 46-year-old woman with a rare umbilical tumor diagnosed as umbilical endometriosis after noticing hemorrhage from a central foramen during menstruation. The authors performed surgical excision under laparotomy and repaired the resulting umbilical skin defect with omphaloplasty using a free skin flap; pathology showed umbilical endometriosis with a tubular structure resembling uterine endometrium. They discuss that the histogenesis of external endometriosis is not established and review four hypotheses, noting that the features in their case are used to support the vascular or lymphatic dissemination hypothesis. This paper is centrally about endometriosis — it specifically describes a case of umbilical endometriosis and discusses its proposed mechanism of spread.

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Abstract

External endometriosis is a condition in which tissue like that of the uterine mucosa occurs outside the uterus. External endometriosis arising in the skin represents about 1.1% of all cases of endometriosis, and among of them, umbilical endometriosis is very rare that occupies about 30%. This paper presents a recent case of umbilical endometriosis. A 46-year-old woman was admitted to the hospital because of an umbilical tumor. Hemorrhage from the foramen in the center of the tumor was recognized during menstrual period. She was diagnosed as having umbilical endometoriosis. Excision of the umbilical tumor under laparotomy was performed. Omphaloplasty was performed using a free skin flap to repair a skin defect at the umbilical region. Pathologically it was umbilical endometoriosis having the structure with tubular pattern like endothelium of the uterus. The histogenesis of the external endometoriosis is not known, but there are four hypotheses; (1) retrograde menstruation, (2) a result of endometrial metaplasia of the peritoneal serosa, (3) mechanical transplantation in surgical scar, and (4) vascular or lymphatic dissemination. The umbilical endometoriosis as observed in this case supports the fourth hypotheses.
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A CASE OF UMBILICAL ENDOMETORIOSIS UNDERGOING OMPHALOPLASTY USING A FREE SKIN FLAP 1998 Volume 59 Issue 5 Pages 1385-1388 Details Abstract External endometriosis is a condition in which tissue like that of the uterine mucosa occurs outside the uterus. External endometriosis arising in the skin represents about 1.1% of all cases of endometriosis, and among of them, umbilical endometriosis is very rare that occupies about 30%. This paper presents a recent case of umbilical endometriosis. A 46-year-old woman was admitted to the hospital because of an umbilical tumor. Hemorrhage from the foramen in the center of the tumor was recognized during menstrual period. She was diagnosed as having umbilical endometoriosis. Excision of the umbilical tumor under laparotomy was performed. Omphaloplasty was performed using a free skin flap to repair a skin defect at the umbilical region. Pathologically it was umbilical endometoriosis having the structure with tubular pattern like endothelium of the uterus. The histogenesis of the external endometoriosis is not known, but there are four hypotheses; (1) retrograde menstruation, (2) a result of endometrial metaplasia of the peritoneal serosa, (3) mechanical transplantation in surgical scar, and (4) vascular or lymphatic dissemination. The umbilical endometoriosis as observed in this case supports the fourth hypotheses. A 46-year-old woman was admitted to the hospital because of an umbilical tumor. Hemorrhage from the foramen in the center of the tumor was recognized during menstrual period. She was diagnosed as having umbilical endometoriosis. Excision of the umbilical tumor under laparotomy was performed. Omphaloplasty was performed using a free skin flap to repair a skin defect at the umbilical region. Pathologically it was umbilical endometoriosis having the structure with tubular pattern like endothelium of the uterus. The histogenesis of the external endometoriosis is not known, but there are four hypotheses; (1) retrograde menstruation, (2) a result of endometrial metaplasia of the peritoneal serosa, (3) mechanical transplantation in surgical scar, and (4) vascular or lymphatic dissemination. The umbilical endometoriosis as observed in this case supports the fourth hypotheses. © Japan Surgical Association Favorites & Alerts Recently viewed articles

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