Wilms’ tumor is the most frequent renal malignancy in childhood with the highest incidence per year, approximately 7,8 cases per 1.000.000in children under 15 years-old and frequently occurred in 2-5 years of age (highest incidences in 3 years-old). There are many differential diagnosis of intra-abdominal tumors and the correct differential diagnosis are detrimental to the prescribed treatments for the patients.Medical imaging along with pathology reports is a precise way to determine the appropriate diagnosis and treatment. Imaging gives information about tumor extension and distant metastasis, especially useful for indicating pre-operative chemotherapy.