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Metastatic renal tumor presenting as ovarian clear cell carcinoma
J R Spencer1, B Eriksen, J E Garnett
1Department of Urology, Northwestern University Medical School, Chicago, Illinois.
Abstract:
Patients with clear cell adenocarcinoma of the kidney often present with metastatic disease, in some cases involving organs in which primary clear cell tumors occur. Under these circumstances, diagnosis of the renal primary tumor may be delayed. Herein we present a case of renal cell carcinoma metastatic to the ovaries initially treated as primary ovarian disease, until the appearance of other metastases prompted the discovery of its true origin. A high index of suspicion and the histologic characteristics of these tumors may allow earlier diagnosis and treatment of a renal primary tumor.
Insights
Metastatic kidney cancer can mimic primary tumors in other organs, delaying diagnosis. Early suspicion and histological review are crucial for identifying renal cell carcinoma, even when it spreads to sites like the ovaries.
Area of Science:
- Oncology
- Pathology
- Nephrology
Background:
- Clear cell adenocarcinoma of the kidney frequently presents as metastatic disease.
- Metastases can occur in organs where primary tumors commonly arise, complicating diagnosis.
- Delayed diagnosis of the renal primary tumor is a significant clinical challenge.
Observation:
- A case presented where renal cell carcinoma metastasized to the ovaries.
- The ovarian metastasis was initially misdiagnosed as primary ovarian disease.
- Subsequent metastases led to the identification of the renal primary tumor.
Findings:
- Histologic characteristics of clear cell tumors are key diagnostic indicators.
- A high index of suspicion is necessary for diagnosing metastatic renal cell carcinoma.
- The study highlights the potential for misdiagnosis in metastatic presentations.
Implications:
- Earlier diagnosis and treatment of renal primary tumors are possible with increased vigilance.
- Understanding metastatic patterns of renal cell carcinoma improves patient outcomes.
- This case underscores the importance of considering renal origins in unexplained metastases.