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Renal cell carcinoma with syncytial giant cell component
1Department of Pathology, Hospital del Mar-I.M.A.S.-I.M.I.M., Universitat Pompeu Fabra, Passeig Marítim 25--29, 08003-Barcelona, Spain. 35903@imas.imim.es
Virchows Archiv : an International Journal of Pathology
|March 13, 2002
Summary
This study details a rare clear cell renal cell carcinoma case featuring multinucleated giant cells. These tumor-derived giant cells, distinct from stromal cells, present a unique histological finding in renal cancer.
Area of Science:
- Nephrology
- Oncology
- Pathology
Background:
- Clear cell renal cell carcinoma (ccRCC) is the most common subtype of kidney cancer.
- Tumors with prominent giant cell components are rare and require careful characterization.
Observation:
- A unique case of ccRCC presented with a significant multinucleated giant cell component admixed with typical ccRCC cells.
- Histological, ultrastructural, cytometric, and cytogenetic analyses confirmed the giant cells originated from the tumor, not stromal or osteoclast sources.
- The giant cells exhibited syncytial features with abundant cytoplasm and multiple uniform nuclei, resembling giant cell carcinomas of the lung.
Findings:
- The multinucleated giant cells in this ccRCC case were tumor-derived, sharing characteristics with the mononucleated tumor cells.
- This syncytial giant cell morphology is distinct from the pleomorphic giant cells typically seen in high-grade renal tumors.
Implications:
- This case expands the histological spectrum of clear cell renal cell carcinoma.
- Further follow-up is necessary to determine the prognostic significance of this rare giant cell morphology in ccRCC.