Hi There, I had breast cancer in 2010, treated w tamoxifen x 5 yrs now on anastrozole. Been having postmenopausal bleeding x 3.5 weeks. Transvaginal US showed diffuse thickening of endometrium 1.09 cm in double wall thickness, neoplasm, including malignancy cannot be excluded . I am going for an endometrial bx May 8. What percentages that it is Ca? what other diagnoses might it be? I am a nurse so speak frankly with me. Thank you, Bianca