64 Cystic Renal Cell Carcinoma

CASE 64


Clinical Presentation


A 62-year-old patient complains of right flank pain.




image

Fig. 64.1 (A) Noncontrast CT image shows an inferior vena cava filter in place. There is an exophytic low-attenuating lesion arising from the right kidney, with thickening seen along the right lateral wall. (B) Following the administration of contrast, there is an enhancing nodule (arrow) seen within the lesion. In addition, there are ill-defined septations and thickening of the left lateral wall.


Radiologic Findings


Noncontrast computed tomography (CT) image shows an inferior vena cava filter in place. There is an exophytic low-attenuating lesion arising from the right kidney, with thickening seen along the right lateral wall (Fig. 64.1A). Following the administration of contrast, there is an enhancing nodule seen within the lesion (Fig. 64.1B). In addition, there are ill-defined septations and thickening of the left lateral wall.


Diagnosis


Cystic renal cell carcinoma (RCC)


Differential Diagnosis



  • Renal abscess
  • Complex inflammatory or infected renal cyst
  • Cystic metastases
  • Solid RCC with cystic degeneration

Discussion


Background


RCCs account for 85% of all renal malignancies. They are usually solid, but up to 20% can be cystic.

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Dec 26, 2015 | Posted by in GASTROINTESTINAL IMAGING | Comments Off on 64 Cystic Renal Cell Carcinoma

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