Extended peripheral zone biopsy schemes increase cancer detection rates and minimize variance in prostate specific antigen and age related cancer rates: Results of a community multi-practice study

被引:257
作者
Presti, JC [1 ]
O'Dowd, GJ
Miller, MC
Mattu, R
Veltri, RW
机构
[1] Stanford Univ, Sch Med, Dept Urol, Stanford, CA 94305 USA
[2] Dianon Syst, UroCor Labs, Oklahoma City, OK USA
[3] Univ Oklahoma, Hlth Sci Ctr, Dept Pathol, Oklahoma City, OK USA
关键词
prostate; biopsy; prostatic neoplasms; prostate-specific antigen;
D O I
10.1016/S0022-5347(05)64051-7
中图分类号
R5 [内科学]; R69 [泌尿科学(泌尿生殖系疾病)];
学科分类号
1002 ; 100201 ;
摘要
Purpose: We assessed the impact of age and prostate specific antigen (PSA) on extended systematic biopsy schemes for detecting prostate carcinoma and better characterized these tumors as a function of patient age and PSA. Materials and Methods: We retrospectively reviewed the records of 2,299 consecutive patients who underwent initial systematic biopsy performed by 167 community based urologists. A total of 12 systematic biopsies of the peripheral zone were obtained in all patients. Various biopsy schemes were then created and cancer detection rates were calculated. Data analyses were stratified by patient age and PSA. Results: On biopsy 1,020 patients (44.4%) had cancer. Detection rates increased with increasing patient age. Increasing age and PSA were associated with larger, higher grade tumors. Overall and unique site specific cancer detection rates were highest for laterally directed biopsies and the apical biopsy of the standard sextant scheme. The 12 site biopsy scheme outperformed all other schemes in patients with PSA 7 ng./ml. or less and in those 60 years or younger. The variation in age related and PSA related detection rates was greatest for the standard sextant scheme and this variability decreased for extended biopsy schemes. Conclusions: This multi-practice community based study confirms the inadequacy of sextant biopsies and emphasizes the need for extended peripheral zone sampling of the lateral aspect of the prostate. Generally increasing patient age and PSA were associated with larger, higher grade tumors. Extended biopsy schemes minimize PSA and age related detection rates.
引用
收藏
页码:125 / 129
页数:5
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