# Spontaneous umbilical endometriosis

## TL;DR

Spontaneous umbilical endometriosis is a rare condition where endometrial tissue appears in the umbilical area without prior surgery.

## Contribution

The paper highlights the rarity and distinct characteristics of the primary form of umbilical endometriosis.

## Key findings

- Umbilical endometriosis is the most common type of cutaneous endometriosis.
- The primary form occurs without prior surgical intervention and is rare.
- It has a predilection for the umbilical area.

## Abstract

Endometriosis is defined as the presence of endometrial tissue (glands and stroma) outside the uterine cavity. Various organs can be affected, including the skin. Umbilical endometriosis is the most common clinical form of extrapelvic endometriosis and the most frequent type of cutaneous endometriosis, classified into primary and secondary forms. The primary or spontaneous form is rare, occurring without any prior surgical intervention, with a predilection for the umbilical area.