Transcatheter arterial embolization as a safe and effective treatment for focal nodular hyperplasia of the liver.

When surgical treatment is being considered for focal nodular hyperplasia, the risk of liver surgery must be carefully balanced against the benefit of resection, especially in the case of a large or centrally located lesion. However, when resection is contraindicated or even impossible, transcatheter arterial embolization should be considered as a safe and less invasive alternative treatment. We describe two cases of young women who presented with abdominal pain and a hypervascular enhancing mass with the radiologic features of focal nodular hyperplasia. Arterial embolization was the therapy selected due to the risk of surgery. In both cases the procedure was successful, and the lesion showed shrinkage during follow-up.