Parapelvic Simple Renal Cyst Mimicking Hydronephrosis on MRI Clinical History A 74-year old man had an MRI of his spine which revealed an area of possible hydronephrosis in his right kidney. An ultrasound of his kidneys was requested to confirm this. Case Description Ultrasound revealed a 6 cm parapelvic simple cyst (renal cyst) in the lower pole. There was also another 2 cm simple cyst adjacent to the former. Diagnosis/ Discussion/ Treatment/ Follow up These findings were confirmed by an outpatient contrast CT scan of the urinary tract carried out months later. Sonograms A right parapelvic renal cyst B-Mode A right parapelvic renal cyst colour Doppler Imaging An axial CT scan post-ultrasound confirming the right parapelvic cyst to be a Bosniak 1 category A coronal CT scan post-ultrasound confirming the right parapelvic cyst to be a Bosniak 1 category Published on: September 18, 2024
