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Clear cell sarcoma of the kidney--a case report
1Department of Pathology, College of Medicine, Chung-Ang University, Seoul, Korea.
Journal of Korean Medical Science
|September 1, 1989
Summary
Clear cell sarcoma of the kidney (CCSK) is a rare, aggressive childhood cancer. This case highlights its diverse histology and mesenchymal origin, crucial for accurate diagnosis and treatment of pediatric kidney tumors.
Area of Science:
- Pediatric Oncology
- Renal Pathology
- Cancer Biology
Background:
- Clear cell sarcoma of the kidney (CCSK) is a rare but highly malignant pediatric renal tumor.
- CCSK is distinct from Wilms' tumor due to its high metastatic potential, particularly to the skeletal system.
Observation:
- A case of CCSK in a 3-year-old boy presented with diverse histological patterns.
- Observed features included classic, epithelioid, trabecular, neurilemmoma-like, cystic, and entrapped collecting tubular patterns.
- Ultrastructural analysis revealed an absence of epithelial differentiation.
Findings:
- Immunohistochemical staining was negative for keratin, S-100 protein, carcinoembryonic antigen, vimentin, desmin, and myoglobin.
- These findings suggest that the intrinsic tumor cells originate from primitive mesenchymal cells.
- The diverse histology underscores the complexity of CCSK diagnosis.
Implications:
- Accurate histological and immunohistochemical characterization is vital for differentiating CCSK from other pediatric renal tumors.
- Understanding the mesenchymal origin may guide future therapeutic strategies for CCSK.
- This case contributes to the understanding of rare pediatric kidney cancers and their metastatic behavior.