患者，男性，4岁，因排尿困难、尿痛、尿滴沥4月，门诊照片检查拟“前尿道结石”于1995年12月18d人院。患者4月前始出现排尿病、哭闹不安、尿液满沥排出、尿后浸湿内裤，既往无类似发病。体检：患者生长发育好，尿道外口无狭窄、梗阻，阴茎悬垂都未触及结石，无压痛，局部未见 Patient, male, 4 years old, due to dysuria, dysuria, urinary drip Leak in April, outpatient photo examination To be “anterior urethral calculus” in December 1995 18d hospital. Patients began to appear before 4 months of micturition, crying uneasy, full of urine excreted urine, wet underwear, urine, no previous similar incidence. Physical examination: patients with good growth and development, urethral orifice without stenosis, obstruction, penis drooping have not touched the stones, no tenderness, some have not seen