Key Diagnostic Features in Uroradiology by Li-Jen Wang

Author:Li-Jen Wang
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

5.25 Renal Carcinoid Tumor

Case 67

Fig. 5.106

Fig. 5.107

Excretory urography (EU) and computed tomography (CT) show a carcinoid tumor of right kidney. Figure 5.106 magnification view of the right kidney of EU at 8 min after contrast medium administration shows dilatation of right renal calyces (arrowhead) with poor opacification of the right renal pelvis (arrow). Unenhanced axial CT (Fig. 5.107a)shows a homogeneous soft tissue mass (arrow) of central portion of the right kidney. There are right renal calyceal calculi. Enhanced coronal CT of corticomedullary phase (Fig. 5.107b) shows homogeneous enhancement of the central located tumor (arrow) simulating a right renal pelvis tumor. Enhanced axial CT of excretory phase (Fig. 5.107c) shows anterior displacement of opacified renal pelvis (arrowhead) by this tumor (arrow), suggestive of its renal sinus location. Histological examination of right nephrectomy reveals a carcinoid tumor located in the renal sinus.

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