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目的 探讨经直肠超声 (TRUS)对前列腺外腺低回声病灶的鉴别诊断意义及其特点。方法 经TRUS发现周边区低回声病灶共 1 34例 ,均经TRUS引导下活检获得病理结果 ,比较良、恶性病变的声像图特点。结果 前列腺外腺低回声恶性病变的特点包括外腺对称性消失 ,病灶边界模糊 ,累及前列腺包膜等。结论 TRUS检查前列腺外腺低回声病灶有助于鉴别诊断 ,有利于提高前列腺活检的效率。
Objective To explore the significance and characteristics of transrectal ultrasonography (TRUS) in the differential diagnosis of hypoechoic lesions of the prostate gland. Methods A total of 1 34 cases of hypoechoic lesions in the peripheral area were found by TRUS. Pathological results were obtained by TRUS-guided biopsy. The sonographic features of benign and malignant lesions were compared. Results The characteristics of malignant hypoechoic lesions of the external gland of the prostate include the disappearance of the external gland symmetry, the blurring of the lesion boundary, and involvement of the prostate capsule. Conclusion TRUS examination of the hypoechoic lesions of the external gland of the prostate gland is helpful in the differential diagnosis and is helpful to improve the efficiency of prostate biopsy.