RT Journal Article SR Electronic T1 Ossifying renal tumor of infancy JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 1978 OP 1989 VO 26 IS 12 A1 El-Husseini, Tareq K. A1 Egail, Siddig A. A1 Al-Orf, Ali M. A1 Mostert, Colin YR 2005 UL http://smj.org.sa/content/26/12/1978.abstract AB Ossifying renal tumor of infancy ORTI is a benign neoplasm, which presents with gross hematuria and less frequently as an abdominal mass, histologically it comprises a large cell with an epithelial nature and osteoid formation. We report a case of a 10-month-old girl who developed ORTI as non-opacified upper calyces of left kidney on excretory urography. We outlined the calcific and tumors nature of the lesion by ultrasound and computed tomography. The macroscopic and histological features were pathognomonic.