Mass Screening of Prostatic Diseases
In 1967, Watanabe developed transrectal ultrasonotomography to show the anatomic structure of the prostate in the form of an easily comprehensible cross-section map (Watanabe 1971, 1974, 1975). According to our surveys the false negative rate of this examination in the diagnosis of clinically manifest prostatic cancer was 0.3 per cent (Watanabe et al. 1978a) (Table 1). Transrectal ultrasonotomography is suitable as a screening test for prostatic cancer because of its low false negative rate and of its non-invasive procedure. We began the development of a new mass screening system for prostatic diseases 4 years ago, using transrectal ultrasonotomography as the primary study (Watanabe et al., 1977a).
KeywordsProstatic Cancer Mass Screening Prostatic Disease Secondary Study Mass Screening Program
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