Quadricuspid pulmonic valve found on well exam

Quadricuspid pulmonic valve (QPV) is almost always a benign anomaly and is therefore usually discovered incidentally on radiographic studies or post-mortem at autopsy. Because of its rarity, the true extent of the physiology of QPV is not fully understood, and the few reported cases of it may underestimate its physiological consequences. In this case, we report on a young active-duty solider who presented for a well check-up and was discovered on imaging to have a QPV. We also review the most recent literature and provide recommendations regarding the most effective diagnostic modalities. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s40779-015-0037-2) contains supplementary material, which is available to authorized users.