<prompt> The typical appearance of spider leg on excretory urography is seen in:HydronephrosisPolycystic kidneyMedullary sponge kidneyRenal cell carcinoma  <response>: Diagnosis USG: Enlarged kidney with uniformly medullary echogenicity. IVP in ADPKD Stretching of the calyces by the cysts spider leg or ball like deformity. Bubble appearance calyceal distoion Swiss cheese appearance. CT scan is IOC in ADPKD 