Clinical Investigation

Comparison of TNM 1987 and TNM 1997 Classifications in Staging of Renal Adenocarcinoma

  • Izzet KOÇAK
  • Baris ALTAY
  • Mehmet DÜNDAR
  • Necmettin ÇIKILI
  • Atalay GÜRSAN
  • Musa KARABULUT

Received Date: 22.12.2000 Accepted Date: 20.03.2001 Meandros Med Dent J 2001;2(1):5-8

Objective: Accurate clinical staging of renal adenocarcinomas is important in determining prognosis and correct mode of therapy. In the present study, we aimed to examine the correlation of clinical staging with computerized tomography (CT)accordingtobothTNM 1987 and 1997 classifications withpathological staging. Material and Methods: Sixty-six patients with a diagnosis of renal adenocarcinoma who underwent radical nephrectomy between January 1995-November 2000 were re-staged according to CT and histopathological findings. Results: Using the TNM 1997 classification resulted in a redistribution of 23 patients from stage pT2 to stage pT1. There was no change in classification of patients with pT3 disease. Clinical staging with CT and pathological correlation was found to be statistically significant in both TNM 1987 and TNM 1997 staging classifications (p Conclusion: Clinical staging of renal adenocarcinomas with CT is an effective and reliable method. TNM 1997 staging has a statistically higher correlation with pathological staging compared to TNM 1987. It is concluded that the apparent shift of cases from stage II to stage I with the new classification will help decrease of follow-up costs.

Keywords: Renal adenocarcinoma, neoplasm staging, TNM classification. computerized tomography