الفهرس 
Anatomy of the KidneysOnly 14 pages are availabe for public view
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Abstract
Purpose: To discuss the evaluation of the enhancement curve over time of the major renal cell carcinoma (RCC) subtypes, oncocytoma, and lipid-poor angiomyolipoma, to aid in the preoperative differentiation of these entities.
Differentiation of these lesions is important, given the different prognoses of the subtypes, as well as the desire to avoid resecting benign lesions.
Methods: Review the literature and discuss the findings of US, but with a special emphasis on contrast-enhanced ultrasound (CEUS). CEUS technique is described, as well as time–intensity curve analysis.
Results: Examples of each of the major RCC subtypes (clear cell, papillary, and chromophobe) are shown, as well as examples of oncocytoma and lipid-poor angiomyolipoma. For each lesion, the time–intensity curve of enhancement on CEUS is reviewed.
Conclusions: Preoperative differentiation of the most common solid renal masses is important, and the time– intensity curves of these lesions show some distinguishing features that can aid in this differentiation. The use of CEUS is increasing, and as a modality it is especially well suited to the evaluation by the time–intensity curve.