Utility of echocardiography in identifying right ventricular extension of Wilm's tumor

We present a rare case of a child with a Wilm's tumor with an intravascular tumor‐thrombus extending from the inferior vena cava to the right ventricle via the tricuspid valve. Rapid tumor progression resulted in life‐threatening clinical deterioration. Radiologic and cardiac imaging demonstrated the extent of the intravascular extension of her tumor‐thrombus. Emergency neo‐adjuvant chemotherapy resulted in rapid clinical improvement, so that complete surgical excision was possible. Following multimodality therapy, the child is now in remission. © 2014 Wiley Periodicals, Inc. J Clin Ultrasound 43:262–264, 2015