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. 2015 Apr 9;1(3):173–185. doi: 10.1002/cjp2.18

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© 2015 John Wiley and Sons Ltd and The Pathological Society of Great Britain and Ireland

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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The histological features of selected carcinosarcoma cases. (A) Case 30 showed a low‐grade endometrioid component (A), solid areas with abundant squamous differentiation (B), low‐grade spindle cell component (C) and focal chondroid differentiation (D). p53 immunohistochemistry (D, inset) was focal in both the endometrioid and spindle cell components. Case 22 had uterine, bilateral ovarian and peritoneal tumour. The uterine tumour showed a carcinosarcoma with prototypical endometrioid histology with squamous differentiation (E) and negative staining for WT1 (E, inset). The ovarian tumour as well as the peritoneal tumour deposits were all pure carcinoma with high‐grade serous carcinoma histology (F) and strong nuclear staining for WT1 (F, inset).