case_images: PMC11751603_01
case_images: Gross and microscopic features of the intestinal sarcomatoid carcinoma. CT scan of the abdomen shows the tumour in the left lower quadrant (A). Gross image (B) and a section of the tumour (C) show a tan creamy texture. H&E staining of the tumour cells is shown (D).
case_images: bcr-18-1-g001.jpg
case_images: PMC11751603_01_bcr-18-1-g001.jpg
case_images: F1
case_images: Gross examination of the specimen shows a soft large and creamy tumour within the bowel wall (figure 1A-C). Microscopically, the specimen reveals an invasive neoplasm composed of solid sheets of spindle cells (figure 1D).
case_images: Immunohistochemical staining of the tumour shows positivity for pan-cytokeratin AE1/AE3, Cam5.2, EMA and vimentin. EMA, epithelial membrane antigen.
case_images: bcr-18-1-g002.jpg
case_images: PMC11751603_01_bcr-18-1-g002.jpg
case_images: F2
case_images: Immunostaining shows the tumour cells are positive for cytokeratin AE1/AE3, vimentin, EMA (focal) and CAM5.2 (focal) (figure 2), and negative for CD117, DOG1, CD34, S100, SMA, desmin, CK7 and CK20 (stains not shown).