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[Clinical study on incidental renal cell carcinoma]
K Yamaguchi1, T Tominaga, Y Nishimura
1Department of Urology, Mitsui Memorial Hospital.
Hinyokika Kiyo. Acta Urologica Japonica
|February 1, 1995
Summary
Increasingly, renal cell carcinoma is detected incidentally, leading to earlier diagnosis and significantly improved survival rates. Early detection through routine screenings improves outcomes for kidney cancer patients.
Area of Science:
- Urology
- Oncology
- Diagnostic Imaging
Context:
- Renal cell carcinoma (RCC) diagnosis has evolved, with a notable rise in incidentally detected cases.
- Between 1985-1992, a significant portion of RCC cases were asymptomatic, highlighting the importance of modern diagnostic methods.
Purpose:
- To compare incidentally detected renal cell carcinoma with symptomatic cases.
- To analyze detection methods, tumor characteristics, and survival rates between incidental and symptomatic RCC.
Summary:
- Over 70% of RCC cases were incidentally detected in the study's later years, often during routine health exams or unrelated investigations.
- Incidental RCCs were smaller, less invasive (organ-confined), and frequently peripheral clear cell subtypes.
- Diagnostic imaging, particularly ultrasonography, played a key role in identifying these early-stage tumors.
Impact:
- Incidental detection of renal cell carcinoma is associated with significantly lower tumor stage and grade.
- Patients with incidentally detected RCC demonstrated a superior five-year survival rate (98.5%) compared to symptomatic cases.
- This highlights the benefit of early detection strategies in improving renal cell carcinoma patient outcomes.