Elsevier

Urology

Volume 61, Issue 2, February 2003, Pages 314-319
Urology

Adult urology
Number of metastatic sites rather than location dictates overall survival of patients with node-negative metastatic renal cell carcinoma

https://doi.org/10.1016/S0090-4295(02)02163-5Get rights and content

Abstract

Objectives

To perform a retrospective study to determine whether survival and immunotherapy response are related to the site of metastases (lung versus bone) and to the number of organ sites involved (one versus multiple). The most common sites of metastatic renal cell carcinoma (mRCC) are the lung and bone.

Methods

The records of 434 patients with mRCC were reviewed. Patients with pathologic evidence of nodal involvement were excluded, leaving 120 patients with mRCC to lung only, 33 patients to bone only, and 144 patients with multiple organ involvement. The response rates to immunotherapy and overall survival were compared. The variables evaluated in statistical analyses included Eastern Cooperative Oncology Group score, grade, 1997 tumor stage, and multiple organ involvement.

Results

The median survival for patients with lung only and bone only mRCC was 27 months; patients with multiple organ involvement had a median survival of 11 months. In patients who underwent nephrectomy followed by immunotherapy, the median survival time was 31, 31, and 13 months in the lung, bone, and multiple sites groups, respectively. The response rate to immunotherapy after nephrectomy was 44%, 20%, and 14% in the lung, bone, and multiple organ groups, respectively. Multivariate analysis confirmed that metastatic disease to more than one organ site was associated with poor prognosis (2.05 risk ratio, P <0.001).

Conclusions

Patients with mRCC to only one organ site fared significantly better than patients who had evidence of disease in multiple organs. Survival in patients with disease limited to the lung was similar to that of patients whose disease was limited to bone.

Section snippets

Patient population

The records of 1087 patients treated at University of California, Los Angeles (UCLA) between 1989 and 2000 were reviewed, identifying 434 patients with mRCC. Patients with pathologic evidence of nodal disease were eliminated from comparison purposes because these patients do poorly regardless of treatment, leaving 297 patients available for evaluation. Three groups of patients who presented with metastases at the time of diagnosis were defined. Metastatic lesions to lung only were present in

Results

The mean age in each of the groups was 59.6 years (lung), 61.1 years (bone), and 57.5 years (multiple). The proportion of men was 78% in the lung group, 81% in the bone group, and 69% in the multiple organ group.

Table I summarizes the presentation characteristics of the three groups. Approximately 55% of the patients had T3 tumors. However, 16% of the primary tumors in the multiple organ group were Stage T4 compared with 7% and 4% in the lung only and bone only groups (P = 0.019), respectively.

Comment

The inclusion of prognostic factors in the analysis of survival data in patients with mRCC is of known importance. Motzer et al.15 recently reported that low Karnofsky score, increased lactate dehydrogenase and calcium levels, absence of nephrectomy, and development of anemia stratified patients into favorable-risk, intermediate-risk, and poor-risk groups with regard to prognosis.

In terms of site or number of metastatic deposits, recent investigators have reported conflicting results on whether

References (24)

  • H.B. Tongaonkar et al.

    Renal cell carcinoma extending to the renal vein and inferior vena cavaresults of surgical treatment and prognostic factors

    J Surg Oncol

    (1995)
  • S.A. Fuhrman et al.

    Prognostic significance of morphologic parameters in renal cell carcinoma

    Am J Surg Pathol

    (1982)
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