Fig. 2

Macroscopic and microscopic findings at the secondary surgery. a Intra-abdominal findings at the second surgery with peritoneal dissemination (left) and omental dissemination (right). b Hematoxylin and eosin staining (scale bar: 250 μm, × 200 magnification). Immunohistochemical analysis of c H3K27me3 (Barr body, scale bar: 25 μm, × 400 magnification), d CK7 (scale bar: 100 μm, × 200 magnification), e CDX2 (scale bar: 100 μm, × 200 magnification), and f PAX8 (scale bar: 100 μm, × 200 magnification)