title: Case report and literature review of a rare diagnosis of ossifying renal tumour of infancy.
abstract: One must entertain a broad differential diagnosis for infants presenting with gross hematuria. Initial workup includes urine analysis, serum laboratory values and abdominal ultrasound. We describe an infant presenting with gross hematuria found to have a calcified renal mass upon initial ultrasound and subsequent computed tomography scan. We considered a differential diagnosis of, but not exclusive to, staghorn calculi, nephroblastoma, Wilms' tumour, mesoblastic nephroma and ossifying renal tumour of infancy (ORTI). A nephrectomy was performed, and the pathology report identified the calcified mass as an ORTI.
authors.affiliation: Department of Urological Sciences, University of British Columbia, Vancouver, BC;
authors.forename: Ryan Kendrick
authors.initials: RK
authors.lastname: Flannigan
authors.affiliation: Department of Radiology, BC Children's Hospital, University of British Columbia, Vancouver, BC;
authors.forename: Manraj Kanwal Singh
authors.initials: MK
authors.lastname: Heran
authors.affiliation: Department of Pathology, University of British Columbia, Vancouver, BC;
authors.forename: Angelica
authors.initials: A
authors.lastname: Oviedo
authors.affiliation: Department of Urological Sciences, University of British Columbia, Vancouver, BC;
authors.forename: Nathan
authors.initials: N
authors.lastname: Wong
authors.affiliation: Department of Urological Sciences, Division of Pediatric Urology, BC Children's Hospital, University of British Columbia, Vancouver, BC.
authors.forename: John S T
authors.initials: JS
authors.lastname: Masterson