By Gary M. White, MD

The term endometriosis refers to the presence of endometrial tissue outside of the uterus.


A painful blue-black papule, plaque, or nodule of a woman's umbilicus which may be tender or bleed with the menstrual cycle is characteristic. It may occur spontaneously or develop in a scar after abdominal surgery of the uterus (e.g., C-section) or fallopian tubes.


Excision is the treatment of choice.


Woman was status post C-section 6 years prior. An. Bras. Dermatol 2013;88

Endometriosis presenting as a nodule in the C-section scar of a woman. Dermatology Online Journal 21;11

A 37-year-old woman with a multilobated, red-brownish nodule of the umbilicus for ten years. It occasionally bleeds during the menses. Dermatology Online Journal 17(6)
A 34 year old woman presented http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1800968/with a two year history of a tender, purplish-brown nodule at the site of a longstanding “mole” on her umbilicus. BMJ. 2007 Feb 17; 334(7589): 374.


Homepage | FAQs | Use of Images | Contact Dr. White

It is not the intention of RegionalDerm.com to provide specific medical advice, diagnosis or treatment. RegionalDerm.com only intends to provide users with information regarding various medical conditions for educational purposes and will not provide specific medical advice. Information on RegionalDerm.com is not intended as a substitute for seeking medical treatment and you should always seek the advice of a qualified healthcare provider for diagnosis and for answers to your individual questions. Information contained on RegionalDerm.com should never cause you to disregard professional medical advice or delay seeking treatment. If you live in the United States and believe you are having a medical emergency call 911 immediately.