[Patent foramen ovale: current state of the art].

Patent foramen ovale is a congenital cardiac lesion that persists into adulthood and which is present in over 25% of the adult population. Its diagnosis, evaluation and treatment have attracted increasing interest as it has been suggested that it may be associated with various pathologic conditions, such as cryptogenic stroke, platypnea-orthodeoxia syndrome, decompression sickness and migraine. However, data on these associations are contradictory. Similarly, the optimum treatment of patients with patent foramen ovale is still debated. This article contains a review of the anatomy, embryology and epidemiology of the condition, its association with other clinical disorders, and current therapeutic options.