title: Renal mass size: concordance between pathology and radiology.
abstract: OBJECTIVE
  Treatment selection of renal masses is informed largely by size. Furthermore, decisions regarding active surveillance involve closely monitoring growth kinetics. It is, therefore, important to understand the accuracy behind radiographic size as compared with pathologic.
  
  
  RESULTS
  A large number of studies indicate computed tomography (CT) imaging overestimates pathologic size, albeit by a small amount. Smaller masses tend to be overestimated, but larger masses underestimated. Clear cell renal cell carcinoma masses are more likely to be overestimated. CT, ultrasound and MRI have similar concordance with pathologic size.
  
  
  CONCLUSIONS
  The differences between radiographic and pathologic size are small. Findings show good efficacy across CT, MRI and ultrasound. This may reduce reliance on CT imaging alone in the future.
authors.affiliation: Division of Urology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. martin.kathrins@uphs.upenn.edu
authors.forename: Martin
authors.initials: M
authors.lastname: Kathrins
authors.forename: Scott
authors.initials: S
authors.lastname: Caesar
authors.forename: Phillip
authors.initials: P
authors.lastname: Mucksavage
authors.forename: Thomas
authors.initials: T
authors.lastname: Guzzo
mesh_terms: D002292:Carcinoma, Renal Cell / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D018450:Disease Progression; D006801:Humans; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D008279:Magnetic Resonance Imaging; D009392:Nephrectomy; D011237:Predictive Value of Tests; D011379:Prognosis; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D047368:Tumor Burden; D014463:Ultrasonography; D057832:Watchful Waiting