Objective: To investigate the effectiveness of BCG Polysaccharide Nucleic Acid (BCG-PSN) Injection and 5-fluorouracil in patients with Verruca plana.

• 摘要目的：观察卡介菌多糖核酸注射液联合外用5-氟脲嘧啶治疗扁平疣的疗效。