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Quadricuspid pulmonary valve in an adult patient identified by transthoracic echocardiography and multi-detector computed tomography.

Quadricuspid pulmonary valve is a rare congenital heart disease. It is infrequently associated with significant clinical complications and tends to be clinically silent. Because of its benign nature, it has been diagnosed mainly post mortem. Its diagnosis by transthoracic echocardiography is very difficult because of the anatomical features. We describe a case of quadricuspid pulmonary valve diagnosed by transthoracic echocardiography and electrocardiography-gated multi-detector row computed tomography.