Wilms' tumor CT

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

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Overview

Abdominal CT scan may be helpful in the diagnosis of wilms tumor.Findings on CT scan which can be suggestive of wilms tumor include soft-tissue density masses, areas of calcification (~10%) and fat-density regions. CT is better than ultrasonography in detecting small lesions of tumor. CT scan of the chest can be helpful to diagnose lung metastasis.

CT scan

  • Abdominal CT scan may be helpful in the diagnosis of wilms tumor.
  • Findings on CT scan which can be suggestive of wilms tumor include:[1]
    • Heterogeneous soft-tissue density masses
    • These masses have frequent areas of calcification (~10%) and fat-density regions
    • Lymph node metastasis
  • CT scan of the renal mass can further reveal:
    • Invasion of surrounding organs
    • Thrombus in or occlusion of the renal vein and/or the inferior vena cava
    • Abdominal lymph nodes and contralateral involvement
  • CT is better than ultrasonography in detecting small lesions of tumor.
  • CT scan of the chest can be helpful to diagnose lung metastasis. [2]
  • A preoperative CT scan helps to better estimate tumor size and volume and to plan surgical management more successfully.
  • It is a useful tool to determine stage based on tumor size and structures involved.[3]
CT abdomen showing wilms tumor Source:Radiopedia Case courtesy of Dr Jeremy Jones,[4]


Wilms tumor - coronal view source: radiopedia[5] Case courtesy of Dr Jeremy Jones

References

  1. Cahan LD (1985). "Failure of encephalo-duro-arterio-synangiosis procedure in moyamoya disease". Pediatr Neurosci. 12 (1): 58–62. PMID 4080660.
  2. Wilms tumour. Dr Tim Luijkx and Dr Frank Gaillard et al. Radiopaedia.org 2015.http://radiopaedia.org/articles/wilms-tumour
  3. Gow KW, Roberts IF, Jamieson DH, Bray H, Magee JF, Murphy JJ (May 2000). "Local staging of Wilms' tumor--computerized tomography correlation with histological findings". J. Pediatr. Surg. 35 (5): 677–9. doi:10.1053/jpsu.2000.5941. PMID 10813321.
  4. https://radiopaedia.org/cases/8084
  5. Case courtesy of Dr Jeremy Jones, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/8084">rID: 8084</a>

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