Author(s)

Kenji Niwa^1*, Yusuke Mizuno^2,3, Ryuichiro Yano⁴, Yoko Ueda¹, Nozomi Narikawa^1,5, Takuji Tanaka⁶

¹Department of Obstetrics & Gynecology, Gujo City Hospital, Gujo, Japan.
²Department of Surgery, Gujo City Hospital, Gujo, Japan.
³Department of General and Cardiothoracic Surgery, Gifu University Graduate School of Medicine, Gifu, Japan.
⁴Department of Obstetrics & Gynecology, Gifu University Graduate School of Medicine, Gifu, Japan.
⁵Department of Obstetrics & Gynecology, Japanese Red Cross Takayama Hospital, Takayama, Japan.
⁶Department of Diagnostic Pathology (DDP) & Research Center of Diagnostic Pathology (RC-DiP), Gifu Municipal Hospital, Gifu, Japan.

We report a recently observed case of primary umbilical endometriosis without previous pelvic surgery. A 41-year-old Japanese woman complained of umbilical nodular tumor. Histopathology revealed endometriosis of an approximate 10 mm resected mass. The stromal cells in endometriosis were immunohistochemically positive for CD10. Two months later the first umbilical surgery, she underwent a left salpingo-oophorectomy and release of adhesion around the left adnexa under a laparoscope. She was treated with dienogest (2 mg/day) for six months after four injections of GnRH analogue for four months. After three years of the follow-up, there were no signs of local relapse and no clinical and ultrasonographic abnormalities due to endometriosis.

Umbilical Endometriosis, No Pelvic Surgery, Preservation of the Umbilicus, CD10, Immunohistochemistry

Niwa, K. , Mizuno, Y. , Yano, R. , Ueda, Y. , Narikawa, N. and Tanaka, T. (2014) Umbilical Endometriosis without Pelvic Surgery. Open Journal of Pathology, 4, 171-175. doi: 10.4236/ojpathology.2014.44022.