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來源資料
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頁籤選單縮合
題 名 | Prostate Cancer: Local Staging with Endorectal magnetic Resonance Imaging=前列腺癌的直腸內置線圈磁振造影診斷 |
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作 者 | 許明輝; 王家槐; 陳光國; 江宏; 鄧木火; | 書刊名 | 中華醫學雜誌 |
卷 期 | 61:5 1998.05[民87.05] |
頁 次 | 頁243-252 |
分類號 | 416.275 |
關鍵詞 | 前列腺; 磁振造影; 腫瘤; 表面線圈; Magnetic resonance imaging; MRI; Prostate MRI; Prostate neoplasms; Surface coil; |
語 文 | 英文(English) |
中文摘要 | 背景前列線癌是一種老年性疾病,發生率與年齡成正比性遞增。資料顯示,其致 死率亦有逐年昇高之趨勢,預先瞭解病灶的分佈範圍與腫瘤定期,特別是局部腫瘤定期,是 決定治療方針的重要依據。本研究的目的,在於評估直腸內置線圈磁振造影在前列腺癌的局 部腫瘤定期上能扮演的角色。 方法自1995年7月至1996年12月間,共31例病患在經直腸生檢或經尿道前列腺切除術證實為 前列腺癌後,接受直腸內置線圈磁振造影檢查,所有生檢或經尿道前列腺切除術在磁振造影 前之3至100天(平均32.1天)實施。磁振造影檢查後2週內,所有病例都接受根除性前列腺 切除術。之後將磁振造影判讀結果與全包式標本病理發現做對照性的比較,以評估磁振造影 對局部腫瘤定期(主要為包膜外侵犯、儲精囊侵犯)診斷之準確率。 結果直腸內置線圈磁振造影對評估腫瘤分佈範圍與體積之準確率為48%,對評估包膜外侵犯 與儲精囊侵犯之敏感率、特異率、陽性預測率分別為88%、69%、80%與66%、84%、50%。 對評估局部腫瘤定期之整體準確率為61%。對區別限性(B期)與侵犯性(C期)前列腺癌, 磁振造影之準確率為84%。 結論本報告顯示,在我們的經驗中,磁振造影不能準碓地偵測腫瘤體積與實際的分佈範圍, 而對評估局部腫瘤定期之準確率亦差強人意。但就區別局限性與侵犯性前列腺癌而言,磁振 造影實為理想的診斷工具。 |
英文摘要 | Background. Prostate cancer cancer has received increasing attention during the past decades. Staging of tumors before treatment is imperative for planning appropriate therapy. The purpose of this study is to assess the role of endorectal magnetic resonance imaging (MRI) in local stating of prostate cancer. Methods. Endorectal MRI was performed in 31 patients with histologically-proven prostate cancer. MRI was done three to 100 days (mean, 32.1 dyas) after either transrectal ultrasonography (TRUS) with biopsy or transurethral resection of the prostate (TURP). Radical prostatectomies were performed within two weeks after MRI. The diagnostic accuracy of endorectal MRI for local tumor staging, specifically for extracapsular extension (ECE) and seminal vesicle invasion (SVI), was evaluated by correlating MRI results with histopathologic findings of whole-mount specimens. Results. The accuracy of endorectal MRI for the detection of tumor presence and estimation of tumor volume was 48%. Sensitivity, specificity and positive predictive value for evaluation of ECE were 88%, 69% and 80%, respectively, and for SVI, were 66%, 84% and 50%, respectively. The overall accuracy of MRI in local tumor staging (using the TMN system) was 61%. Accuracy in differentiating localized from invasive cancer was 84%. Conclusions. Endorectal MRI is not accurate enough to detect tumor presence or estimate tumor volume. Diagnostic accuracy for local tumor staging is unsatisfactory. However, endorectal MRI is highly accurate in differentiating localized (stage B) from invasive (stage C) cancer. |
本系統中英文摘要資訊取自各篇刊載內容。