Fat containing bilateral synchronous Wilms’ tumor: Imaging findings

Abstract

The Wilms’ tumor (WT), an embryonic neoplasm deemed to arise from metanephric blastema, is the most common renal tumor of childhood. Bilaterality is reported to occur in approximately 5% of such cases. Although the sources in the radiologic literature state that when CT shows definite fat within a renal mass, angiomyolipoma can be established as the diagnosis and fat tissue can be seen in 7% of the WTs, as well. In this case report, we denote radiological features of a synchronous bilateral WT containing fatty tissue.

Keywords

• Wilms’ tumor
• bilateral synchronous
• fatty tissue
• imaging findings

References

1. Park CM, Kim WS, Cheon JE, et al. Teratoid Wilms tumor in childhood: CT and ultrasonographic appearances. Abdom Imaging 2003; 28: 440-443.
2. Ritchey ML, Green DM, Breslow NB, Moksness J, Norkool P. Accuracy of current imaging modalities in the diagnosis of synchronous bilateral Wilms' tumor. A report from the National Wilms Tumor Study Group. Cancer 1995; 75: 600-604.
3. Prokop M, Galanski M. Spiral and Multislice Computed Tomography of the Body. Thieme-New York, 2003, pp. 669.
4. Curry NS, Schabel SI, Garvin AJ, Fish G. Intratumoral fat in a renal oncocytoma mimicking angiomyolipoma. AJR Am J Roentgenol 1990; 154: 307-30
5. Davidson AJ, Davis CJ Jr. Fat in renal adenocarcinoma: never say never. Radiology 1993; 188: 316.
6. Variend S, Spicer RD, Mackinnon AE (1984). Teratoid Wilms’ tumor. Cancer 53(9): 1936-1942
7. Fernandes ET, Parham DM, Riberio RC, Douglass EC, Kumar AP, Wilimas J(1988). Teratoid Wilms’ tumor: the St Jude experience. J Pediatr Surg. 23(12): 11311134
8. Baert AL, Knauth M, Sartor K. Pediatric Uroradiology. 2nd edn. Springer-Verlag Berlin Heidelberg, 2008, pp. 435.

9. Lee JKT, Sagel SS, Stanley RJ, Heiken JP. Computed Body Tomography with MRI Correlation. 3rd edn. Lippincott Williams & Wilkins, 2006, pp. 1270-1278.