Recurrent episodes of deep vein thrombosis in a young man.

We present the case of a 32-year-old man suffering from recurrent episodes of deep vein thrombosis (DVT). He was heterozygous for the G1691A mutation in the Factor V gene. His father was heterozygous for the same mutation and had a unique episode of DVT after a fracture of the tibia. Genetic predisposition significantly influences the prevalence of thrombotic events, however, additional unknown factors may be involved in the initiation and recurrence of venous thromboembolism.