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Five masses of the renal capsule, which were studied angiographically, demonstrated a typical inward displacement of the renal parenchyma, and prominence and variable displacement of the renal capsular arteries. Benign lesions typically lacked malignant neovascularity and had a sharp interface with the renal parenchyma. The angiographic characterization of renal capsular lesions may help in identification of benign lesions and prevent unnecessary nephrectomy.
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Myerson et al. (1979) studied this question.
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