Calculi in upper-middle ureter的用法和樣例：
例句
- The ureteral stone was initially impacted in the upper ureter and finally dislodged in the distal segment.
這個病人的輸尿管結石原本發生在上段，後來掉到下段的位置。 - They concluded that depending on stone burden, shock wae lithotripsy might be a good option for initial treatment of most ureteral calculi in children.
他們得出結論，依賴於結石負荷，衝擊波碎石術是大部分兒童輸尿管結石初次治療時的一種好選擇。
