Sporadic clear cell renal cell carcinoma but not the papillary type is characterized by severely reduced frequency of primary cilia.
Schraml P, Frew IJ, Thoma CR, Boysen G, Struckmann K, Krek W, Moch H. Sporadic clear cell renal cell carcinoma but not the papillary type is characterized by severely reduced frequency of primary cilia. Mod Pathol. 2009 Jan; 22(1):31-6.