Metastatic Pattern of Spread of Wilms Tumor

Introduction:
also known as nephroblastoma. This is the most common renal tumor of childhood and typically occurs at 3-4 years of age. It may be associated with various syndromes.
Prevalence: Common Metastasis Frequency: Common
References:
Magn Reson Imaging Clin N Am. 2008 Aug;16(3):479-97, vi. PMID: 18585600
Primary Tumor:
Sorry, no description has been written for the primary tumor.
Known Metastatic Locations:
| Site | Frequency | Characteristics | Comments |
| Lung Parenchyma | Common | Nodule | most common metastatic site |
| Local Lymph Nodes | Common | ||
| Renal Vein | Common | ||
| Liver | Uncommon | ||
| Kidney | Rare | Contralateral | synchronous tumors arising in nephrogenic rests |
| Peritoneum | Rare | can occur as drop mets if tumor ruptures |