Re: does having 13 mm endometrial lining indicate cancer
I just had an endometrial biopsy for a uterine lining of 13mm, exactly the same as yours. I was at a point in my cycle that it should have been less than that. I heard back from my biopsy and there was no cancer or precancer. So, no, just because the lining is 13mm does not mean you have cancer, but do whatever testing your doctors want you to do to be certain.