These data demonstrate the diagnostic utility of CA IX in (1) differentiating CRCC from ChRCC and oncocytomas, (2) distinguishing low-grade CRCC from normal renal tubules in small samples, (3) separating ICC from HCC, and (4) identifying metastatic CRCC from other metastases with clear cell features.

The use of a new brush design for brush cytology of biliary strictures shows increased diagnostic accuracy, likely due to improved cellular yield, as evidenced by an increase in number of cellular clusters obtained.

No abstract