Primary umbilical endometriosis (Villar’s nodule): Case report

Background: Umbilical endometriosis or Villar’s nodule is uncommon. Incidence goes up to 0.5-1.2% of all patients with endometriosis. As far as 2012, only 109 cases of umbilical endometriosis have been reported worldwide, there is no incidence reports in Mexico. Clinically, it’s a solitary node, solid and well defined, colored red, blue or black and it’s ocassionally accompanied by bleeding and dysmenorrhea. The treatment can be medical or surgical and it consists of painkillers, and hormonal suppression using GnRH analogues, hormonal contraceptives, danazol or progesterone. Surgical treatment consists in complete resection of the umbilical lesion. The aim of this paper is to present a clinical report case and have a bibliographic review of this pathology.

Clinical case: A 34 year-old patient comes to the clinic due to severe umbilical pain of some months, associated with enlargement, swelling and cyclic menstrual bleeding. Escision of the lesion is performed and sent to pathology having the diagnosis of umbilical endometriosis. There is no evidence of endometriosic implants under laparoscopic control.

Conclusions: Regards of being a rare pathology, umbilical endometriosis must be taken as a differential diagnosis in patients with umbilical lesions associated with menstrual cycle pain.