case_images: PMC6713201_01
case_images: Low power view showing replacement of atrioventricular node by cystic tumour of the atrioventricular node. (Masson trichrome, x40).
case_images: TFSR_A_1595349_F0001_C.jpg
case_images: PMC6713201_01_TFSR_A_1595349_F0001_C.jpg
case_images: F0001
case_images: They extended into, but did not replace, the His bundle (Figures 1-5) and extended into the atrial septum.
case_images: Higher power view showing that the tumour consists of solid nests of cells as well as glands (Masson trichrome, x200).
case_images: TFSR_A_1595349_F0002_C.jpg
case_images: PMC6713201_01_TFSR_A_1595349_F0002_C.jpg
case_images: F0002
case_images: They extended into, but did not replace, the His bundle (Figures 1-5) and extended into the atrial septum.
case_images: Low power view of His bundle showing partial replacement by glandular elements of tumour (Masson trichrome, x40).
case_images: TFSR_A_1595349_F0003_C.jpg
case_images: PMC6713201_01_TFSR_A_1595349_F0003_C.jpg
case_images: F0003
case_images: They extended into, but did not replace, the His bundle (Figures 1-5) and extended into the atrial septum.
case_images: High power view of glands showing microvilli within glandular cells at bottom of image (Masson trichrome, x400).
case_images: TFSR_A_1595349_F0004_C.jpg
case_images: PMC6713201_01_TFSR_A_1595349_F0004_C.jpg
case_images: F0004
case_images: They extended into, but did not replace, the His bundle (Figures 1-5) and extended into the atrial septum.
case_images: High power image of tumour cells staining positively for carcinoembryonic antigen (immunohistochemistry for carcinoembryonic antigen, x400).
case_images: TFSR_A_1595349_F0005_C.jpg
case_images: PMC6713201_01_TFSR_A_1595349_F0005_C.jpg
case_images: F0005
case_images: They extended into, but did not replace, the His bundle (Figures 1-5) and extended into the atrial septum.