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Imaging of solid kidney tumours in children
C Hugosson1, R Nyman, B Jacobsson
1Department of Radiology, King Faisal Specialist Hospital, Riyadh, Saudi Arabia.
Insights
This study evaluated imaging for pediatric solid renal tumors. Contrast-enhanced CT and MR imaging accurately determined tumor size and origin, but struggled with staging. MR imaging may help differentiate Wilms' tumors from nephroblastomatosis.
Area of Science:
- Pediatric Radiology
- Oncology Imaging
- Renal Tumors
Background:
- Solid renal tumors are rare in children.
- Accurate diagnosis and staging are crucial for treatment planning.
- Various imaging modalities are used for evaluation.
Purpose of the Study:
- To compare the accuracy of ultrasound (US), CT, and MR imaging in evaluating pediatric solid renal tumors.
- To assess the utility of different imaging techniques in differentiating tumor types and stages.
Main Methods:
- Retrospective analysis of 18 children (6 months to 12 years) with 20 solid renal tumors.
- Evaluation using US, contrast-enhanced CT, and non-enhanced MR imaging.
- Comparison of imaging findings with histopathological diagnoses.
Main Results:
- Contrast-enhanced CT and MR imaging were equally accurate in determining tumor size and origin.
- US was only reliable for assessing tumor size.
- Imaging modalities were unreliable in differentiating between stages I, II, and III tumors.
- MR imaging characteristics showed some variation between Wilms' tumors (WT) and non-WTs.
- Contrast-enhanced MR imaging showed potential for differentiating WT from nephroblastomatosis.
Conclusions:
- Contrast-enhanced CT and MR imaging are valuable for assessing size and origin of pediatric renal tumors.
- Further research is needed to improve staging accuracy with imaging.
- Contrast-enhanced MR imaging may aid in distinguishing Wilms' tumors from nephroblastomatosis.
Abstract:
Eighteen children aged 6 months to 12 years with 20 solid renal tumours: 13 Wilms' tumours (WT), 2 clear cell sarcomas of the kidney, 1 malignant rhabdoid tumour of the kidney and 2 cases of bilateral nephroblastomatosis with Wilms' tumour underwent evaluation with US, CT and MR imaging. Contrast-enhanced CT and non-enhanced MR were equally accurate in determining the size and origin of the tumour but were unreliable in separation of stages I, II and III. US could only accurately assess the size of the tumours. MR characteristics varied somewhat between WTs and non-WTs but contrast-enhanced MR imaging might be useful for separation of WTs from nephroblastomatosis.