Korean J Pathol.
2009 Apr;43(2):182-184.
Giant Cell Tumor-like Proliferation Associated with Renal Staghorn Calculi: A Case Report
- Affiliations
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- 1Department of Pathology, College of Medicine, Inje University, Goyang, Korea. hskim@paik.ac.kr
- 2Department of Urology, College of Medicine, Inje University, Goyang, Korea.
Abstract
- A 62-year-old man with left flank pain and hematuria was shown to have a staghorn stone in left renal pelvis. Grossly, renal pelvis and calyces were markedly dilated with cystic and hemorrhagic degeneration and renal parenchyma was atrophied. A tumor-like mass was located in a hemorrhagic cyst of the renal upper pole. This mass consisted of giant cells and stromal cells mimicking a giant cell tumor of bone. This giant cell tumor-like proliferation may represent a response to hemorrhage into a cystic cavity. Recognition of this finding is important to avoid the over-diagnosis of neoplastic lesions.
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