Nov 2012

Umbilical Endometriosis With Urachal Remnant

Author Affiliations

Author Affiliations: Departments of Plastic and Reconstructive Surgery (Drs Mizutani and Ochiai) and Pathology (Dr Maeshima), National Hospital Organization Tokyo Medical Center, Tokyo, Japan; and Department of Plastic and Reconstructive Surgery, Keio University School of Medicine, Tokyo (Dr Sakamoto).

Arch Dermatol. 2012;148(11):1331-1332. doi:10.1001/archdermatol.2012.1983

Umbilical endometriosis, also called Villar nodule, is an extremely rare type of endometriosis, with an incidence of 0.5% to 0.1% among women with extragonadal or external endometriosis.1 The urachus, a vestigial structure arising from the anterior bladder wall, is progressively destroyed with advancing age, but destruction does not occur in approximately 1 in 5000 individuals.2 This report describes a case of umbilical endometriosis that developed in the absence of previous abdominal or uterine surgery.

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