title: Comparison of grading systems for estimating the prognosis of renal cell carcinoma.
abstract: In this study histologic slides of 165 patients who were diagnosed as RCC between 1983 and 1993 were re-evaluated and each tumour was graded according to Thoenes, Fuhrman, Arner and Skinner's grading systems. According to Thoenes' system, patients with grade (G) 2 and 3 tumours had significantly shorter survival compared to patients with G 1 tumours. The survival difference between the subgroups of Fuhrman and Skinner's grading systems did not reach statistical significance. When the histologic differentiation was grouped as low grade (G 1&2) and high grade (G 3&4) tumours in Fuhrman and Skinner's systems, a statistically significant difference was noted between the groups in terms of survival.
authors.affiliation: Department of Pathology, Hacettepe University, School of Medicine, Ankara, Turkey.
authors.forename: A
authors.initials: A
authors.lastname: Usubütün
authors.forename: M C
authors.initials: MC
authors.lastname: Uygur
authors.forename: A
authors.initials: A
authors.lastname: Ayhan
authors.forename: C
authors.initials: C
authors.lastname: Toklu
authors.forename: A
authors.initials: A
authors.lastname: Sahin
authors.forename: H
authors.initials: H
authors.lastname: Ozen
authors.forename: S
authors.initials: S
authors.lastname: Ruacan
mesh_terms: D000328:Adult; D000368:Aged; D002292:Carcinoma, Renal Cell / Q000401:mortality / Q000473:pathology*; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000401:mortality / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011379:Prognosis; D015996:Survival Rate