Gallbladder sarcomatoid carcinoma: Seven case reports

Figure 1 Pathological findings. A and B: Representative images of hematoxylin and eosin staining (HE)-stained tumor tissue (A: × 200; B: × 400); C and D: Immunohistochemical images showing positive staining for pan-cytokeratin (C) and negative staining for desmin (D) (× 400). HE: Hematoxylin and eosin; PCK: Pan-cytokeratin.

Figure 2 Computed tomography images. A: Lymph node involvement before adjuvant therapy; B: Computed tomography image showing a significant reduction in lymph node involvement (B circle) compared to that before adjuvant therapy (A circle); C: Metastases in the liver (arrow); D: Metastases in the thoracic vertebra (arrow).