Hi I Just Had A Laparoscopy To Diagnose Possible Endometriosis.

Hi I just had a laparoscopy to diagnose possible endometriosis. Doctor confirmed it was, removed the necessary tissue. Went in today for post-op and was told I have a mass on my ovary, said it was endometrioma and that my uterus was large, possible endometriosis in there as well. Was told need to remove the endometrioma mass and consider possible hysterectomy. Should I be concerned of it being cancerous?