A prospective study was conducted to evaluate the occurrence of occult blood in the faces in 48 patients after receiving extracoporeal shock-wave lithotripsy (ESWL) treatment.

• 摘要吾人于48位临床因肾脏或上端输尿管结石接受体外波碎石术治疗之病人进行一前瞻性之研究，观察其术前术后粪便潜血出现之情形。