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Introduction The most common congenital malformations afflicting the tricuspid valve are Ebstein malformation and tricuspid valvar dysplasia. These lesions are considered in this chapter, together with a brief look at acquired malformations. Tricuspid valvar abnormalities, or abnormalities of the morphologically…

Perhaps one of the most vexing aspects of congenital cardiac disease is the current inability to explain its origin. Environmental causes have been invoked, and until recently only scant evidence had pointed toward a genetic component. Recent experimental data, combined…