Geographical variation in incidence of prostate cancer in Sweden.

OBJECTIVE: To investigate the geographical variation in prostate cancer incidence in Sweden, in particular the incidences of screening-detected tumours and curative treatment of prostate cancer. MATERIAL AND METHODS: Data were retrieved from the National Prostate Cancer Register of Sweden for all cases of prostate cancer diagnosed in the year 2000-01. There were a total of 14 376 cases of prostate cancer and the mean total annual age-adjusted incidence was 197/100 000 men. There were 3318 cases in tumour category T1c, i.e. non-palpable tumours diagnosed during work-up for an elevated serum level of prostate-specific antigen, 1006 of which (30%) were asymptomatic and detected at a health check-up. RESULTS: The difference between the counties with the lowest and highest age-adjusted incidences per 100 000 men of total prostate cancer was almost twofold (128 vs 217). The corresponding variation in incidence of category T1c tumours was more than fourfold (13 vs 60); the difference in incidence of T1c tumours detected in asymptomatic men was up to 10-fold (2 vs 20); and there was more than a fourfold variation in incidence of curative treatment between counties (13 vs 67). Measured incidences were mostly highest in urban regions and in counties with university hospitals. CONCLUSION: There are large geographical variations in prostate cancer incidence and in the frequency of curative treatment for prostate cancer in Sweden and there appear to be large geographical variations in the uptake of prostate cancer screening.

The National Prostate Cancer Register in Sweden 1998-2002: trends in incidence, treatment and survival.

OBJECTIVES: To provide a descriptive review of the establishment of the National Prostate Cancer Register (NPCR) in Sweden, to present clinical characteristics at diagnosis and to calculate the relative survival of different risk groups after 5 years. MATERIAL AND METHODS: Since 1998, data on all newly diagnosed prostate cancers, including TNM classification, grade of malignancy, prostate-specific antigen (PSA) level and treatment, have been prospectively collected. For the 35,223 patients diagnosed between 1998 and 2002, relative survival in different risk groups has been calculated. RESULTS: Between 1998 and 2002, 96% of all prostate cancer cases diagnosed in Sweden were registered in the NPCR. The number of new cases increased from 6137 in 1998 to 7385 in 2002. The age-standardized rate rose in those aged < 70 years, while it was stable, or possibly declining from 1999, in the older age groups. The proportion of T1c tumours increased from 14% to 28% of all recorded cases. The age-adjusted incidence of advanced tumours (M1 or PSA > 100 ng/ml) decreased by 17%. The proportion of patients receiving curative treatment doubled. Patients with N1 or M1 disease or poorly differentiated tumours (G3 or Gleason score 8-10) had a markedly reduced relative 5-year survival rate. CONCLUSIONS: It is possible to establish a nationwide prostate cancer register including basic data for assessment of the disease in the whole of Sweden. The introduction of PSA screening has increased the detection of early prostate cancer in younger men and, to a lesser extent, decreased the incidence of advanced disease. The effect of these changes on mortality is obscure but the NPCR in Sweden will serve as an important tool in such evaluation.

Nocturia: a new perspective on an old symptom.

The purpose of this review is to make urologists aware of the fact that nocturia among elderly men has a multifactorial aetiology and does not always depends on bladder outlet obstruction. After diagnosis of the underlying cause, specific treatments can be offered to the patient, one of which is transurethral resection of the prostate. Nocturia, defined as waking up at night to void, is a very common and bothersome symptom, affecting >50% of both men and women aged >60 years. Nocturnal polyuria is one reason for nocturia. Recent studies have shown that this condition can now be treated successfully with desmopressin acetate, a synthetic analogue of arginine vasopressin, which for many years has been used in the treatment of enuresis in children.

Non-systematic screening for prostate cancer in Sweden--survey from the National Prostate Cancer Registry.

OBJECTIVE: The large increase in the incidence of prostate cancer is largely due to testing of serum levels of prostate-specific antigen (PSA). Little is known about how PSA testing is used in clinical practice outside of screening programmes. Essentially, PSA can be used in the health check-ups of men without symptoms as a form of non-systematic screening or in the work-up of symptomatic patients. The aim of this study was to investigate the cause of initiating a work-up leading to a diagnosis of prostate cancer, with emphasis on T1c tumours. MATERIAL AND METHODS: Data on the cause of initiation of work-up leading to a diagnosis of prostate cancer were retrieved from the National Prostate Cancer Registry for 6361 incident cases in tumour category T1c and local stages T2, T3 and T4 registered in Sweden in 2000. RESULTS: For 1496 cases in tumour category T1c (non-palpable tumours detected during work-up of elevated PSA), the cause of PSA testing was health check-ups in 32% of cases, work-up of symptoms suspected to emanate from the prostate in 51% and other causes/not reported in 17%. For all stages combined, the cause of initiation of the diagnostic work-up was health check-ups in 18% of cases, symptoms in 68% and other causes/not reported in 14%. CONCLUSION: Non-systematic screening using PSA testing has been introduced in Sweden. However, prostate cancer is still most commonly diagnosed during the work-up of symptomatic patients.