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精道远端区域应用解剖及MRI影像特征研究

, PP. 2373-2377

Keywords: 精囊,射精管,前列腺小囊,解剖,MRI影像

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Abstract:

目的通过对成年男性精道远端区域精细解剖结构的深入观察和相关生理数据的准确测量,为临床更加精确地开展精道内镜技术提供依据。方法收集35例行根治性前列腺切除(laparoscopicradicalprostatectomy,LRP)及11例行全膀胱切除(laparoscopicradicalcystectomy,LRC)术后完整的组织标本,对其精道远端解剖结构进行精细观察和测量,并结合患者术前MRI,对精道远端结构的MRI影像特征与实际测量结果进行对比分析;对109例前列腺增生(benignprostatichyperplasia,BPH)患者行经尿道内镜手术前双侧精囊按摩,直视下观察射精管开口与前列腺小囊开口的解剖特征。结果46例术后标本的精细解剖结果:精囊长度:左侧(39.7±7.4)mm,右侧(41.4±8.6)mm;宽度:左侧(16.5±3.3)mm,右侧(16.4±3.0)mm;厚度:左侧(7.8±2.4)mm,右侧(7.8±2.3)mm;射精管长度:左侧(15.0±2.5)mm,右侧(14.9±2.4)mm;内径:左侧(1.2±0.2)mm,右侧(1.1±0.2)mm。47.8%(22/46)标本可见前列腺小囊,深度(6.7±1.7)mm。MRI图像下所测精囊长度:左侧(39.4±6.6)mm,右侧(41.3±7.6)mm;宽度:左侧(17.1±3.4)mm,右侧(16.4±2.9)mm,显示与实体标本测量数据高度吻合。内镜下观察显示:78.9%(86/109)显示前列腺小囊开口于精阜隆起部,21.1%(23/109)未发现明确前列腺小囊开口,射精管通常开口于前列腺小囊开口两侧旁约2mm处,与其构成三角形或直线排列关系。结论本研究获得的精道远端区域的解剖数据对临床开展相关内镜技术具有重要指导意义,MRI对该区域具有良好分辨价值。

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