Laparoscopic removal of a large endometriotic ovarian cyst and excision of left uterosacral nodule. Extensive endometriosis means bulky deep fibrotic endometriosis deposits that can often be palpated preoperatively as tender pelvic nodules. These nodules consist of endometriosis glands and stroma surrounded by fibromuscular tissue that has accumulated over many years in response to cyclic monthly activation of the endometriosis. They represent a longstanding chronic inflammatory response.

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