Umbilical endometriosis is defined as an ectopic localization of functional endometrium at the level of the umbilicus. It is a rare condition, representing 0.5% to 1% of all extragenital endometriosis …
Umbilical endometriosis or Villar's nodule is defined as the presence of endometrial tissue within the umbilicus and represent 0.5%-1% cases of endometriosis ectopia. It is classified as primary or secondary …