MKI67 and endometrium adenocarcinoma: Furthermore, the immunohistochemical profile of Ki-67 has also been sporadically determined in feline endometrial lesions, including in two FEA case reports [8] - in which Ki-67 varied from moderate to high - and in the description of multiple uterine lesions, which included an area of endometrial adenocarcinoma, that exhibited 40 % of positive cells for Ki-67 [25].