Fig. 2

Histopathological and immunohistochemical staining findings. A Highly to moderately differentiated endometrioid adenocarcinoma, with tumor cells arranging in a glandular or sieve pattern with proliferative fibrous tissue surrounding (200 × ; H&E staining); a Highly to moderately differentiated endometrioid adenocarcinoma (100 × ; H&E staining), the white box area was magnified to A; B Positive stain for estrogen receptor (100 ×); C Positive stain for progesterone receptor (100 ×); D Positive stain for vimentin (100 ×); E Positive stain for paired-box gene 8 (100 ×); F Negative stain for cytokerin-7(100 ×); G Negative stain for arginase 1 (100 ×); H Negative stain for hepatocyte (100 ×); I Negative stain for calretinin (100 ×); J Negative stain for glypican-3 (100 ×)