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Updated: Jul 15, 2026
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In Vivo, Percutaneous, Needle Based, Optical Coherence Tomography of Renal Masses
Published on: March 30, 2015
[Small incidental renal tumors. Evaluation and biological parameters]
1Urologische Universitätsklinik, Medizinische Universität, A-1090 Wien. mRemzi@gmx.at
Der Urologe. Ausg. A
|April 21, 2007
Summary
Small renal tumors (<4 cm) can be cancerous or benign. Imaging is unreliable for diagnosis; percutaneous biopsy improves accuracy, guiding treatment, especially for high-risk patients.
Area of Science:
- Urology
- Oncology
- Radiology
Context:
- Tumor size is a key prognostic factor in renal tumors, influencing patient survival.
- Small renal tumors (<4 cm) present diagnostic challenges, with a significant percentage being malignant.
- Current imaging techniques have limitations in accurately determining tumor characteristics and malignancy.
Purpose:
- To evaluate the diagnostic accuracy of imaging for small renal tumors.
- To assess the malignancy and aggressiveness of renal tumors based on size.
- To determine the utility of percutaneous renal mass biopsy in preoperative diagnosis.
Summary:
- Of 287 patients with small renal tumors (<4 cm), 19.5% were benign. Tumors >3 cm exhibited more aggressive features, including higher stage, grade, and metastasis rates.
- Imaging, particularly CT, has limitations in accurate size and malignancy assessment, with errors up to +/-0.3 cm.
- Percutaneous renal mass biopsy demonstrated over 90% accuracy for benign lesions, proving valuable for therapeutic decisions, especially in high-risk patients.
Impact:
- Highlights the unreliability of imaging for diagnosing small renal tumors, necessitating alternative diagnostic methods.
- Emphasizes the importance of percutaneous biopsy for accurate diagnosis and treatment planning in renal oncology.
- Supports the integration of biopsy into the diagnostic pathway for small renal masses, particularly in patients with elevated surgical risk.
