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Effectiveness of mass screening for the prognosis of prostate cancer patients in Japanese communities
Author(s) -
Kubota Yutaka,
Ito Kazuto,
Imai Kyoichi,
Yamanaka Hidetoshi
Publication year - 2002
Publication title -
the prostate
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.295
H-Index - 123
eISSN - 1097-0045
pISSN - 0270-4137
DOI - 10.1002/pros.10057
Subject(s) - prostate cancer , medicine , prostate , oncology , stage (stratigraphy) , prostate cancer screening , cancer , gynecology , urology , prostate specific antigen , paleontology , biology
BACKGROUND A study was conducted to investigate the effectiveness of mass screening (MS) for prostate cancer in Japanese communities using the long‐term follow‐up results. METHODS Subjects were 279 patients with prostate cancer detected by MS in Gunma prefecture (MS group) and 624 patients with prostate cancer who did not undergo screening (non‐MS group). From the follow‐up data, the prognoses were compared between the groups. RESULTS The ratio of patients with Stage II cancer was higher for the MS group (59.1%) when compared to non‐MS group (25.3%). As a whole, the prognosis of the MS group was more favorable than that of the non‐MS group for relative survival rate. Prognosis was especially favorable for patients with Stage III prostate cancer in mass screening group considering the effect of lead‐time bias. CONCLUSIONS Early detection and longer survival of the patients with prostate cancer detected by mass screening suggested the effectiveness of prostate cancer screening. Prostate 50: 262–269, 2002. © Wiley‐Liss, Inc.