phlebolith

1. Conclusion: Soft-tissue rim sign is a reliable and valuable CT sign in diagnosing ureteral calculus, and is helpful in differentiating with phlebolith and calcification due to other nature.

结论：轮缘征是诊断输尿管结石较可靠的CT征象，具有较高的诊断价值，此征还可与静脉石和其他性质的钙化具有鉴别意义。

2. vein stones, phlebolith