D

Fig. 6.17 Mucinous adenocarcinoma. A Cut surface with glassy appearance. B Mucinous adenocarcinoma beneath high-grade intraepithelial neoplasia in ulcerative colitis. C Well-differentiated tumour with large mucin lakes. D Multilocular mucin deposits with well-differentiated adenocarcinoma.

Fig 6.18 Signet-ring cell carcinoma invading a nerve.

Fig. 6.19 Adenocarcinoma with venous invasion.

Fig. 6.17 Mucinous adenocarcinoma. A Cut surface with glassy appearance. B Mucinous adenocarcinoma beneath high-grade intraepithelial neoplasia in ulcerative colitis. C Well-differentiated tumour with large mucin lakes. D Multilocular mucin deposits with well-differentiated adenocarcinoma.

Fig. 6.19 Adenocarcinoma with venous invasion.

reactive for cytokeratin. The term carci-nosarcoma applies to malignant tumours containing both carcinomatous and het-erologous mesenchymal elements.

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