case_images: PMC8114248_01
case_images: Poorly differentiated mucinous adenocarcinoma (black arrows) invading through the muscularis propria.
case_images: 10.1177_23247096211012224-fig1.jpg
case_images: PMC8114248_01_10.1177_23247096211012224-fig1.jpg
case_images: fig1-23247096211012224
case_images: A 75-year-old White female with history of stage IIIB (PT4a,PN2b,M0; 25/26 lymph nodes positive) poorly differentiated mucinous colon cancer (Figure 1) was admitted for back pain.
case_images: Cytokeratin staining of the bone marrow, positive for CK20 as well as CDX2 and negative for CK7 suggesting metastatic carcinoma.
case_images: 10.1177_23247096211012224-fig2.jpg
case_images: PMC8114248_01_10.1177_23247096211012224-fig2.jpg
case_images: fig2-23247096211012224
case_images: The malignant epithelioid infiltrate showed expression of CK20 and CDX2 and lack of CK7 expression, consistent with metastatic colorectal carcinoma (Figure 2).