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[Renal tumors smaller that 3 cm]
A Vega Vega1, J L Gutièrrez Baños, B Martín García
1Servicio de Urología, Hospital Universitario Marqués de Valdecilla, Santander, España.
Objectives:
To analyze the characteristics of renal adenocarcinoma less than 3 cm in size and to determine the therapeutic approach in these tumors.
Methods:
286 cases with a histological diagnosis of renal adenocarcinoma that had undergone surgery at our hospital over the last 25 years were reviewed.
Results:
The study showed 11 cases had renal tumors less than 3 cm in size. Six had been incidentally diagnosed. Two patients presented metastasis during the course of the disease and one patient had massive lymph node invasion (N3) at the time of diagnosis. Seven patients had a low tumor stage and grade.
Conclusion:
Renal tumors less than 3 cm in size have been considered to have a low potential for malignancy. However, the availability of more sophisticated diagnostic imaging techniques have led to earlier detection of renal masses, when the tumor is of a smaller size. Therefore determining whether the tumor is benign or malignant should be based exclusively on the histopathological findings. Treatment of this type of lesions is by surgery and performing a partial nephrectomy should be considered.
Insights
Small renal tumors (less than 3 cm) require histopathological analysis for accurate diagnosis. Surgical intervention, including partial nephrectomy, is the recommended treatment for these renal adenocarcinomas.
Area of Science:
- Urologic Oncology
- Nephrology
- Surgical Pathology
Context:
- Renal adenocarcinoma, particularly small tumors (<3 cm), presents diagnostic and therapeutic challenges.
- Advancements in imaging technology facilitate earlier detection of renal masses.
- Historically, small renal tumors were presumed to have low malignant potential.
Purpose:
- To characterize renal adenocarcinoma tumors measuring less than 3 cm.
- To define the optimal therapeutic strategy for small renal masses.
Summary:
- A review of 286 renal adenocarcinoma cases identified 11 tumors <3 cm.
- Despite small size, some cases exhibited metastasis or significant lymph node invasion (N3).
- Histopathological findings are crucial for differentiating benign from malignant small renal tumors.
Impact:
- Highlights the necessity of histopathological confirmation for small renal tumors, regardless of size.
- Supports surgical management, emphasizing partial nephrectomy as a viable option.
- Informs clinical practice regarding the evaluation and treatment of incidentally detected small renal masses.