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