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[Pediatric renal cell carcinoma].

E Bruder1, H Moch

  • 1Institut für Pathologie der Universität Basel. elisabeth.bruder@unibas.ch

Der Pathologe
|May 29, 2004
PubMed
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This summary is machine-generated.

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Pediatric renal cell carcinoma (RCC) is rare. New WHO classifications in 2004 include rare subtypes like TFE3-translocation carcinomas and those linked to neuroblastoma, highlighting a heterogeneous group needing further study.

Area of Science:

  • Pediatric oncology
  • Nephrology
  • Cancer genetics

Context:

  • Renal cell carcinoma (RCC) in children and adolescents is rare, accounting for ~1% of pediatric renal tumors.
  • The 2004 World Health Organization (WHO) classification introduced new renal tumor entities specific to young patients.
  • Recent advancements have expanded the understanding of rare pediatric RCC subtypes.

Purpose:

  • To review and incorporate newly described renal tumor entities into the 2004 WHO classification for pediatric and adolescent patients.
  • To detail the characteristics of specific rare RCC subtypes, including those associated with neuroblastoma and TFE3-translocations.
  • To highlight the ongoing challenges in classifying a phenotypically diverse group of pediatric renal tumors.

Summary:

Related Experiment Videos

  • Renal cell carcinoma (RCC) in pediatric and adolescent populations is uncommon, with specific subtypes emerging since the 1997 WHO classification.
  • RCC associated with neuroblastoma, occurring years post-diagnosis, often exhibits allelic imbalances on chromosomes 20q13, 2p31-32.2, 13q22, and 14q31.
  • TFE3-translocation carcinomas constitute ~20% of pediatric RCCs, characterized by TFE3 protein overexpression due to translocations like t(X;17) and t(X;1), and typically display clear cytoplasm and papillary architecture.
  • A significant portion of pediatric RCCs remain unclassified, representing a heterogeneous group with potential for new subtype identification.

    • Impact:

    • Provides an updated classification framework for rare pediatric renal cell carcinomas.
    • Enhances diagnostic accuracy for specific entities like TFE3-translocation RCC and neuroblastoma-associated RCC.
    • Underscores the need for continued research into the classification and understanding of heterogeneous pediatric renal tumors.