Key result
Malignant fibrous histiocytoma of the heart can develop neovascularity that leads to coronary artery fistula formation, in addition to causing cardiac output obstruction.
Cardiac tumors can cause coronary artery fistulas through neovascularity, in addition to causing cardiac output obstruction.
May prompt fistula evaluation in obstructive cardiac tumors; hypothesis-generating for neovascular mechanisms and needs confirmation.
Neovascularity in cardiac tumours is uncommon and fistula formation from such neovascularity is extremely rare. Fistula formation from neovascularity developing in a malignant fibrous histiocytoma of the heart is described in a 48-year-old man. The the case illustrates that cardiac tumour is not only a cause of cardiac output obstruction but also of coronary artery fistula.
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Nawa et al. (1997) studied this question. Malignant fibrous histiocytoma of the heart can develop neovascularity that leads to coronary artery fistula formation, in addition to causing cardiac output obstruction.
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