Coexistence of Cystic Nephroma and Neuroblastoma: A Rare Case of a Childhood Collision Tumor - Bozkurt, Ceyhun; Ertem, Ulya; Apaydin, Sema; Senel, Ferda; Sahin, Gürses; Yüksek, Nazmiye; Incesoy Özdemir, Sonay; Boduroglu, Esin (Urology Journal, 2012)