Song Hai-Feng, Liang Lei, Liu Yu-Bao, Xiao Bo, Hu Wei-Guo, Li Jian-Xing
Department of Urology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China.
World J Clin Cases. 2023 Aug 16;11(23):5554-5558. doi: 10.12998/wjcc.v11.i23.5554.
Jackstone is a rare entity of calculi in urinary tracts and has the characteristic appearance resembling toy jacks. They are nearly always reported to occur in the urinary bladder, we first report a rare case of jackstone located in the obstructed renal calyx.
We report a 46-year-old man presenting with intermittent, painless gross hematuria and left flank pain. Urinary computed tomography revealed staghorn stones and secondary hydronephrosis. A jackstone with radiating branches was found in one of the dilated renal calyx. Percutaneous nephrolithotomy was performed and endoscopic images were recorded during the operation. Postoperative stone composition analysis revealed it as calcium oxalate monohydrate stones.
Jackstones can occur in the renal collecting system besides the bladder. The unique appearance and imaging manifestations are the most important factors in the diagnosis of jackstones, and further exploration of the formation mechanism is required.
鹿角状结石是泌尿系统结石中的一种罕见类型，具有类似玩具小陀螺的特征外观。几乎所有报道称其发生于膀胱，我们首次报告了一例位于梗阻性肾盏的鹿角状结石罕见病例。
我们报告一名46岁男性，表现为间歇性、无痛性肉眼血尿和左侧腰痛。泌尿系统计算机断层扫描显示鹿角状结石和继发性肾积水。在一个扩张的肾盏中发现了一个带有放射状分支的鹿角状结石。进行了经皮肾镜取石术，并在手术过程中记录了内镜图像。术后结石成分分析显示其为一水草酸钙结石。
鹿角状结石除了可发生于膀胱外，也可出现在肾集合系统。独特的外观和影像学表现是诊断鹿角状结石的最重要因素，需要进一步探索其形成机制。
