Carcinosarcoma of the stomach: A case report and review of the literature

Figure 1 CT scan of the abdomen showing tumor (arrows). AB, CD: tumor diameters.

Figure 2 Macroscopic specimen obtained during surgery. Tumor underwent central necrosis, and a hemorrhagic zone is visible on the periphery.

Figure 3 Massive lymph node infiltration with tumor cells. Only a few tubules can be seen on the lymph-node periphery. In between and all around, large polygonal cells are haphazardly arranged (sarcomatous component). This appearance resembles that of the main tumor mass. A: hematoxylin-eosin (HE), × 50; B: HE, × 100.

Figure 4 Cytokeratin-18-positive epithelial cells arranged in tubules (× 400).

Figure 5 Vimentin-positive polygonal tumor cells (× 400).