Tanikawa K, Nishizawa K, Kawamura N
Department of Urology, Tokai University School of Medicine.
Hinyokika Kiyo. 1987 Sep;33(9):1474-9.
A case of seminal vesicle cyst associated with ipsilateral renal agenesis was experienced recently in our clinic. A 23-year-old male presented with a complaint of right hemiscrotal pain. Right kidney was not visualized by excretory urography. Cystoscopic examination revealed the absence of the right half of trigone and the right posterolateral wall bulging into the bladder, suggestive of an extrinsic mass displacing the bladder wall. Ultrasonography and computerized tomographic scan showed a large cystic mass in the right side of the retrovesical region. Exploratory operation disclosed that the cystic mass was part of the dilated seminal vesicle. Seminal vesiculectomy was done. Many cases of seminal vesicle cyst are associated with a simple or complex malformation of ipsilateral upper urinary tract (renal agenesis, dysplasia, hypoplasia and ectopic ureter). We speculate that most of the benign seminal vesicle cysts are formed as a congenital anomaly due to defective mesonephric duct development which causes concomitant malformations in the upper urinary tract.
最近我们诊所接诊了一例精囊囊肿合并同侧肾缺如的病例。一名23岁男性因右侧阴囊疼痛前来就诊。排泄性尿路造影未显示右肾。膀胱镜检查发现膀胱三角区右半部分缺失，右后外侧壁向膀胱内凸出，提示有一外在肿物推移膀胱壁。超声检查和计算机断层扫描显示膀胱后区域右侧有一巨大囊性肿物。探查手术发现该囊性肿物是扩张的精囊的一部分。遂行精囊切除术。许多精囊囊肿病例与同侧上尿路的单纯或复杂畸形（肾缺如、发育异常、发育不全和异位输尿管）有关。我们推测，大多数良性精囊囊肿是由于中肾管发育缺陷导致上尿路并发畸形而形成的先天性异常。
