Prostate cancer in Victoria in 1993: patterns of reported management.

Abstract

OBJECTIVE: To describe the management of newly diagnosed prostate cancer in 1993 during the early prostate specific antigen (PSA) era. DESIGN: Survey of medical practitioners involved in the management of a total sample of incident prostate cancer cases selected from a population-based cancer registry. The survey was conducted in 1996, and the sample was followed up until 1998, to obtain five-year survival data on all patients. SETTING: The State of Victoria, including both public and private health sectors. PATIENTS: All men who were newly diagnosed with prostate cancer in the six months January-June 1993. MAIN OUTCOME MEASURES: Reported management by method of diagnosis; staging investigations; and treatment by observation, hormonal therapy, radical radiotherapy or radical prostatectomy. RESULTS: 1048 of 1117 (94%) cases diagnosed were surveyed. Most of the men (858 [82%]) were older than 65 years: 117 (11%) cancers were detected by screening asymptomatic men, and a further 269 (26%) were found by testing of men with symptoms ("case-found"). The 259 (25%) men treated with definitive local therapies (prostatectomy and curative radiotherapy) were younger (< 75 years), and their disease was clinically more localised (clinical stage, T1-2) and they were often found by screening or case-finding. Men given hormonal therapy (407; 39%) or managed without treatment (373; 36%) tended to be older and more likely to have been diagnosed by transurethral resection of the prostate (TURP). The overall relative survival at five years was 86% and was decreased in men with cancers of higher histological grade or more advanced clinical stage, or who had higher PSA levels. CONCLUSIONS: Although a third of patients were detected by screening or case-finding early in the PSA era, definitive local therapies were used infrequently (25% of the total sample). Most received appropriate treatment.