Figure 2From: Undifferentiated giant cell type carcinoma of the gallbladder with sarcomatoid dedifferentiation: a case report and review of the literature (A) Diffuse infiltration by tumour cells. Invasion of muscularis propria is also present (x20). (B) Notice the pleomorphic hypochromatic nuclei with prominent nucleoli, and scattered multinucleated hyperchromatic cells. Haemorrhage and necrotic areas are also present (x200). (C) Total immuno-negativity to anti-epithelial membrane antigen (x100).Back to article page