PMC4799559_01
(a and b) An abdominal computed tomography scan showed an isodensity and weak contrast-enhancing but delay-enhancement solid mass in the right kidney. (c) Selective renal arteriography showed an abnormal staining on the upper pole of the right kidney. The blood supply is not abundant. (d and e) Histological and immunohistochemical examinations revealed that the tumor had inconspicuous nuclear morphism and plenty of renin granules in the cytoplasm (H and E staining, Original magnification, d: x100, e: x40).
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F1
An abdominal computed tomography scan showed a 3-cm isodensity and weak contrast-enhancing but delay-enhancement solid mass in the right kidney cortex [Figure 1a and 1b]. The blood supply is not abundant [Figure 1c]. In other words, the tumor was juxtaglomerular cell tumor (reninoma) [Figure 1d and 1e].