Case 1 (A - H). Scanning power (A) showing well differentiated endometrioid carcinoma with SECs mimicking micropapillary serous borderline tumor of the ovary. Medium power (B) showing area of well differentiated endometrioid carcinoma, (C) with "Medusa head-like appearance", (D) multilayered cuboidal cells with "cracked" appearance. (E) PTEN-null (F) focal faint p53 immunostaining in SECs and (G, H) typical "cracked" artifact in micropapillary serous borderline tumors, low and high magnifications respectively of Case 2.
Singh et al. Diagnostic Pathology 2011 6:13 doi:10.1186/1746-1596-6-13