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Characteristics of image‐detected solid renal masses: Implication for optimal treatment
Author(s) -
LI GUORONG,
CUILLERON MURIEL,
GENTILPERRET ANNE,
TOSTAIN JACQUES
Publication year - 2004
Publication title -
international journal of urology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 67
eISSN - 1442-2042
pISSN - 0919-8172
DOI - 10.1111/j.1442-2042.2004.00750.x
Subject(s) - medicine , malignancy , radiology , pathological , biopsy , benign tumor , renal cell carcinoma , kidney , pathology
Background: Solid renal masses are found increasingly. Further analysis of the characteristics of solid renal masses is useful for optimal treatment. Methods: A retrospective analysis of all solid renal masses was conducted from December 1998 to May 2003 at the Urology Department, Central University Hospital of Saint‐Etienne, France. A total of 162 solid renal masses were treated. The preoperative imaging diagnosis of ultrasound and computed tomography, and final pathological results were reviewed. Results: One hundred and forty‐five tumors were pathologically confirmed to be renal cell carcinomas (RCC); 17 tumors (10.5%) were benign. There were eight renal oncocytomas, eight renal angiomyolipomas and one benign mixed epithelial/stroma tumor. Three oncocytomas and five angiomyolipomas were strongly suspected before surgery. The majority of the benign tumors were ≤4 cm. The percentage of small benign tumors (≤4 cm) was significantly higher than large benign tumors (>4 cm). Although it is possible to use imaging to detect some benign tumors, the majority of benign tumors cannot be diagnosed definitively by imaging before surgery. Conclusions: Malignancy in solid renal masses is tumor‐size related. Benign solid renal tumors appear mainly as small‐sized tumors. The preoperative differentiation between an RCC and a benign tumor can be difficult. Our data suggest that a biopsy is necessary in selected patients to achieve the maximum accuracy in order to provide optimal treatment.