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Bindi Irwin recently shared an emotional post on Instagram about her recovery after 13 years of suffering with endometriosis.

In the post, the wildlife conservationist, 27, listed all the things a doctor surgically removed to provide relief.

"Fifty-one endometriosis lesions, a chocolate cyst and my appendix were all removed," she revealed.

BINDI IRWIN'S PAINFUL MEDICAL JOURNEY ENDS WITH LIFE-CHANGING SURGERIES

What is a chocolate cyst?

While not a widely known term, a "chocolate cyst" is a symptom of a more severe version of endometriosis, a condition in which tissues similar to those that line the uterus grow outside the organ, according to Cleveland Clinic.

In addition to causing painful periods and pelvic discomfo

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