外来初診例の前立腺エコー像 : 加齢に伴う諸計測値の変化

Abstract

急性疾患および前立腺癌を除く447例の外来初診時の経直腸的前立腺エコー像を検討した。年齢分布は19歳から94歳, 平均年齢65.3歳で, 60歳代が最も多く, 70歳代50歳代と続いた。検討項目は, 積層法による前立腺総重量(g), 最大割面積(cm2), 最大割面における前後径(cm), 左右径(cm)および上下径(cm)であった。30g以上の重量増加例は, 50歳代より徐々に頻度を増した

To elucidate the change with aging in prostatic morphology, 447 cases without acute diseases and prostate cancer of the first visit from January 1988 to December 1990 were examined by transrectal ultrasonography. Total weight of the prostate, area of maximum section, lateral and anteroposterior diameter on the maximum section and supero-inferior diameter were evaluated. The total weight of the prostate was not found to be correlated with aging. The total weight of the prostate showed a high variation with aging. Prostate growth with more than 30 g was greater in the fifties and increased gradually thereafter. Similar findings were observed for antero-posterior diameter on the maximum section and supero-inferior diameter. With aging, the total weight of the prostate in 20-30% of the patients showed an increase while in 30-40% of the patients, no increase. The total weight of the prostate increased in the fifties with subsequent gradual increase in the sixties. According to prostate shape, antero-posterior diameter on the maximum section and supero-inferior diameter was related to the weight of the prostate.