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Renal cell carcinoma: analysis of postoperative recurrence patterns
Eun Jin Chae1, Jeong Kon Kim, Soo Hyun Kim
1Department of Radiology, Asan Medical Center, University of Ulsan, 388-1 Poongnap-dong, Songpa-gu, Seoul, 138-736, Korea.
Radiology
|November 13, 2004
Summary
Renal cell carcinoma (RCC) often recurs within two years post-surgery, primarily in the lungs. Key recurrence factors include tumor size, T stage, overall stage, and nuclear grade.
Area of Science:
- Oncology
- Urology
- Radiology
Background:
- Renal cell carcinoma (RCC) is a significant health concern.
- Understanding recurrence patterns is crucial for patient management and prognosis.
Purpose of the Study:
- To retrospectively analyze renal cell carcinoma (RCC) recurrence patterns.
- To identify factors influencing tumor recurrence after surgical resection.
Main Methods:
- Retrospective analysis of 194 patients (162 men, 32 women) who underwent complete surgical resection of RCC.
- Radiologists determined tumor recurrence, time, and sites.
- Kaplan-Meier statistics evaluated relationships between recurrence and tumor factors (size, T stage, N stage, stage group, histology, nuclear grade).
Main Results:
- Tumor recurrence occurred in 21% of patients (41/194), with a mean time of 17 months.
- 83% of recurrences happened within 2 years post-surgery.
- The lung was the most frequent recurrence site (n=29).
- Recurrence risk increased with larger tumor diameter (≥5 cm), higher T stage (T3a/T3b vs. T1), advanced stage group (III vs. I), and higher nuclear grade (3/4 vs. 1/2).
Conclusions:
- Renal cell carcinoma (RCC) recurrence typically manifests within two years after surgery.
- The lung is the most common site for RCC recurrence.
- Tumor diameter, T stage, stage group, and nuclear grade are significant predictors of RCC recurrence.