Endometriosis has quite a complex history, with many experts coming close to identifying the true nature of this condition before two scientists eventually discovered the correct nature of endometriosis in the early 20th century.

Carl Rokitansky’s Findings

For example, throughout the 19th century, Carl Rokitansky extensively researched the problem. His research leads some to think that he was the first to discover endometrial tissue in abnormal areas. Why? Because he would refer to them as “uterine-gland containing sarcomas (or cancer).”

While Rokitansky was not correct (as endometriosis is not cancerous), his findings would still be important. Namely, they helped future researchers discover the true nature of endometriosis by the end of the 19th century.

Thomas Cullen and John Sampson’s Works

So, just who do most people credit with the discovery of this condition? that honor typically goes to two individuals: Thomas Cullen and John Sampson.

In the early 20th century, a surgeon named Thomas Cullen put a clear picture together of endometrium tissue originating from the uterus. Then, in the mid-1920’s, scientist John Sampson discovered the last piece of this particular medical puzzle. Specifically, he discovered that menstruation leads to endometrial tissue outside the uterus.

Most scientists today regard the works of Cullen and Sampson as essential, thereby solidifying their status as the discoverers of endometriosis.

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