Tehran University of Medical Sciences International Journal of Hematology-Oncology and Stem Cell Research 2008-2207 7 4 2013 12 15 45 48 Shahla Ansari Department of hematology-oncology, Ali Asghar children's hospital, School of medicine, Iran University of medical sciences, Tehran, Iran. Ghasem Miri-Aliabad Fellow, pediatric hematology-oncology, Ali Asghar children's hospital, School of medicine, Iran University of medical sciences, Tehran, Iran. Nasser Rakhshani Department of pathology, Ali Asghar children's hospital, School of medicine, Iran University of medical sciences, Tehran, Iran. 2015 10 14 Wilms' tumor (WT) is the most common primary renal tumor in children. Common sites of metastases are lungs, liver and regional lymph nodes. Testicular and paratesticular metastasis due to WT have been reported but it is extremely rare. We report a 33-month -old male with bilateral WT and metastasis to right spermatic cord. https://ijhoscr.tums.ac.ir/index.php/ijhoscr/article/view/436 https://ijhoscr.tums.ac.ir/index.php/ijhoscr/article/download/436/361