History
• 49 female presented with right flank pain.
• USG abdomen revealed a right multilocular renal
mass 5.3x5.3 cm which was seen at upper pole,
reported as most likely benign.
• MDCT intravenous urogram showed a well
defined heterogeneously enhancing mass lesion
arising from superior pole of right kidney
measuring 6.6x 5.2 cm
• A partial nephrectomy was performed which
showed a multiloculated tumor with translucent
walls. Cysts were separate from each other.
• On contacting patient a history of long standing
goiter and hypothyroidism was obtained. One
section provided from the partial nephrectomy
specimen.
? Diagnosis
?? Differential diagnosis
Pancytokeratin
AE1/AE3
CD10
Chromogranin
CD56
Vimentin
Cytokeratin 7
AMACR-negative
AMACR- internal
control
EMA -negative
EMA- internal control
Diagnosis