Liu Guan-Lin, Wang Guo-Yao, Wu Ke-Rong, Yin Wei-Qi, Wu Wei-Jie
Center of Urology and Nephrology, Ningbo First Hospital, Zhejiang University, Ningbo, Zhejiang 315010, China.
Zhonghua Nan Ke Xue. 2018 Feb;24(2):128-132.
To explore the etiological factors for calculus-associated seminal vesiculitis by analyzing the composition of seminal vesicle calculus samples.
This retrospective study included 6 cases of recurrent hematospermia diagnosed with seminal vesicle calculus by non-contrast pelvic CT. The patients were aged 28 to 69 years, with persistent or recurrent hematospermia for 3 months to 6 years, and 5 of them with a history of acute urethritis. All the patients underwent seminal vesiculoscopy, which confirmed calculus-associated seminal vesiculitis. The calculus samples were obtained with a spiral dislodge and their composition was determined with a second-generation infrared calculus composition analyzer. The patients were followed up for 2 to 12 weeks postoperatively, during which non-contrast pelvic CT was employed for observation of recurrent calculus in the reproductive tract.
Pelvic CT scanning indicated recurrence of seminal vesicle calculus in 3 cases at 12 weeks postoperatively, of which, 2 were accompanied with recurrent hematospermia, both observed at 4 weeks after operation. As for the composition of the calculus, the infrared calculus composition analyzer revealed struvite (magnesium ammonium phosphate hexahydrate) in 5 cases and a mixture of calcium oxalate dihydrate, calcium oxalate monohydrate, and carbonate apatite in the other one.
Seminal vesicle calculi are most commonly composed of struvite, and infection is the main etiological factor for calculus-associated seminal vesiculitis.
通过分析精囊结石样本的成分，探讨结石相关性精囊炎的病因。
本回顾性研究纳入6例经盆腔非增强CT诊断为精囊结石的复发性血精患者。患者年龄28至69岁，持续性或复发性血精3个月至6年，其中5例有急性尿道炎病史。所有患者均接受了精囊镜检查，证实为结石相关性精囊炎。采用螺旋式取出法获取结石样本，并用第二代红外结石成分分析仪测定其成分。术后对患者进行2至12周的随访，期间采用盆腔非增强CT观察生殖道结石复发情况。
盆腔CT扫描显示，3例患者术后12周精囊结石复发，其中2例伴有复发性血精，均在术后4周观察到。关于结石成分，红外结石成分分析仪显示5例为鸟粪石（六水合磷酸镁铵），另一例为二水合草酸钙、一水合草酸钙和碳酸磷灰石的混合物。
精囊结石最常见的成分是鸟粪石，感染是结石相关性精囊炎的主要病因。
