Multifocal unilateral wilms' tumor: Radiopathological correlation

Wilms' tumor constitutes majority of malignant primary renal tumors in children. Outcomes of treatment are excellent in Wilms' tumor, with a cumulative survival rate of 87%. A combination of imaging and histopathology is needed for confirmation of Wilms' tumor. However, imaging alone can be used for screening, diagnostic workup, assessment of response to treatment, preoperative evaluation, and follow-up for recurrence. In malignant primary tumors such as Wilms' tumor, where the outcomes following treatment are excellent, management strategies are aimed at risk-based stratification approach, thereby improving the quality of life in children with high-grade tumors while maintaining extremely good outcomes in the pediatric age group with low-grade tumors. This case report describes a rare sonological appearance of multifocal unilateral Wilms' tumor in a 4-month-old infant.