The objective of this exhibit is to review and illustrate imaging findings of Wilms tumour,
also known as nephroblastoma.
we willdiscuss imaging features which can help radiologists distinguish Wilms tumour from neuroblastoma.
Wilms tumour is a malignantpaediatric kidney tumour thought to arise from metanephric precursor tissue that persists in the developing child. Typically it occurs in early childhood with peak incidence at 3-4 years old (80% before 5 years old).
It is the most commonpaediatric renal mass (87%). Wilms tumour may be bilateral in 4-13% of cases andin 2% of cases it may be familial,
related to congenital defects such as cryptorchidism,
hemihypertrophy and hypospadias,
and also related to WT1 and...
Findings and procedure details
Diagnostic imaging of suspected Wilms tumour Plain film has minimal contribution,
it may show bowel displacement and typical changes of adjacent ribs caused by compression by a slowly growing tumour. Intravenous urography was used in the past and it may show distortion of the pyelocalicial system but it is not sufficient for diagnosis and staging. Ultrasound (US) is a very useful diagnostic tool and imaging generally begins with ultrasound. Computed Tomography (CT) and Magnetic Resonance (MR)...
Both Wilms tumour and neuroblastoma are relatively common abdominal childhood cancers. Wilms tumour has typical imaginging findings that we should look for when making the diagnosis.
Radiologists should give special atention to the presence of tumour thrombus and other foci of disease. Although at times it is difficult to make the differential diagnosis between these two malignant tumoursit is important that radiologists know the typical imaging findings that help us to distinguish them.
Author information: Diogo Fonseca (firstname.lastname@example.org),
Department of Radiology,
- Lowe LH,
and Hernanz-Schulma M; "Pediatric Renal Masses: Wilms Tumor and Beyond" RadioGraphics200020:6,1585-1603; - Bhatnagar S; "Management of Wilms’ tumor: NWTS vs SIOP". Journal of Indian Association of Pediatric Surgeons .
2009;14(1):6-14; - Ibrahim NMA,
"The accuracy of MDCT for staging of Wilms’ tumor",
In The Egyptian Journal of Radiology and Nuclear Medicine,
Pages 575-581; -...