Renal Cell Carcinoma: The Experience of Kuwait Cancer Control Center, Kuwait

Objectives: This retrospective study was undertaken to analyze the profile of patients presenting with renal cell carcinoma (RCC) and treatment outcomes. Subjects and Methods: Records of 49 patients (36 male, 16 female, 21– 75 years) treated at the Kuwait Cancer Control Center, Kuwait for RCC during the period 1993–1998 were analyzed. Forty-one patients had a nephrectomy, 18 postoperative radiotherapy and 1 patient also received adjuvant immunotherapy with interferon. Patients with metastatic disease were treated with a variety of agents including interferon, chemotherapy (vinblastine) or a hormonal agent (megestrol acetate). Data analysis was performed using SPSS statistical software package. Overall survival and disease-free survival were calculated using the Kaplan-Meier method. Results: Twenty-nine patients pre- sented with symptoms classically associated with RCC. Metastases at diagnosis were seen in 9 patients (18%), with lung being the most frequent site. The commonest tumor subtype was clear cell carcinoma (32.6%). Thirtynine patients (80%) achieved a complete response to treatment and relapse was documented in 10 patients (26%). The majority of failures were distant, with lung metastases being the most common. Response to salvage treatment was poor. Overall survival was 83% at 2 years. The disease-free survival was 68 and 45% at 2 and 5 years, respectively. Conclusions: Although many patients presented with advanced local disease, a majority achieved complete response after radical surgery with or without postoperative radiation therapy. Salvage of metastatic disease proved difficult with interferon, chemotherapy.