An immunohistochemical study on the expression of sex steroid receptors, Ki-67 and cytokeratins 7 and 20 in feline endometrial adenocarcinomas

Table 2 Main histological features of feline endometrial adenocarcinomas in comparison to the normal endometrium

		Atypia			Number of mitoses HPF			Myometrial invasion	Serosa invasion	Vascular/lymphatic invasion
		n (%)			n (%)
		Absent	Low to moderate	High	≤1	1-5	≥5
		Absent	Low to moderate	High	≤1	1-5	≥5	n (%)	n (%)	n (%)
FS	SE	13 (100.0)	0	0	13 (100.0)	0	0	0	0	0
	SGE	13 (100.0)	0	0	12 (92.3)	1 (7.7)	0	0	0	0
	DGE	13 (100.0)	0	0	12 (92.3)	1 (7.7)	0	0	0	0
LS	SE	10 (100.0)	0	0	10 (100.0)	0	0	0	0	0
	SGE	10 (100.0)	0	0	10 (100.0)	0	0	0	0	0
	DGE	10 (100.0)	0	0	7 (70.0)	3 (30.0)	0	0	0	0
FEA		0	11 (45.8)	13 (54.2)	3 (12.5)	19 (79.2)	2 (8.3)	16 (66.7)	1 (4.2)	3 (12.5)

FS = follicular stage; LS = luteal stage; FEA = feline endometrial adenocarcinomas; SE = surface endometrium; SGE = superficial glandular epithelium; DGE = deep glandular epithelium; HPF = high power field

ISSN: 1746-6148