陰囊疼痛是一個最需令人小心的泌尿科症狀。隱藏著睪丸發炎、睪丸扭轉等一些疾病，甚至連很小心的理學檢查包括B型超音波儀、都卜勒超音波等都不能對多數的病人達到正確診斷，在這些病人就必須以開刀方式排除睪丸扭轉的可能。我們提出一個14歲的病人曾施行過睪丸固定術，而後以同側陰囊疼痛來表現，複合彩色都卜勒超音波檢查來証明睪丸扭轉，並回顧文獻說明複合彩色都卜勒超音波在睪丸扭轉有高於百分之九十的敏感性及特殊性和較低的侵犯性，但對間歇性扭轉則有其限制。故複合彩色都卜勒超音波因為它可以清楚顯示無扭轉病人的睪丸血流，可以避免一些病人的開刀探查。

Scrotal pain is one of the most alarming urological symptoms concealing testicular inflame-mation, testicular torsion and a variety of miscellaneous diseases. Even with careful physical ex-amination including B-mode and Doppler ultrasonography, a reliable diagnosis may not be achieved I a significant number of patients. In these cases, an operation is necessary for exclu-sion of testicular torsion. We report a 14-year-old patient with history of orchiopexy who presented with scrotal pain on the same side. Duplex color Doppler sonographic examination was performed to prove the testicular torsion. Duplex color Doppler sonography is documented as having high sensitivity and specificity over 90%, and as being less invasive than other methods. Limitation was noted in intermittent testicular torsion. In this situation the recently developed duplex color Doppler sonography may be able to avoid surgical explration in many patients since it can clearly dem-onstrate testicular blood flow in patients who do not suffer from testicular torsion. (J Urol R.O.C., 8:220-223,1997)