Resolution of ampullary stone impaction with duodenoscopy-guided direct frequency-doubled double-pulse Nd:YAG laser lithotripsy after the failure of rescue lithotripsy

• Xiao Bo Cai, MD, PhD,
• Yue Qing Qian, MD,
• Wei Gao, MD,
• Ling Ling Zhang, MD,
• Xin Jian Wan, MD, PhD

Affiliations

Xiao Bo Cai, MD, PhD

Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China

Yue Qing Qian, MD

Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China

Wei Gao, MD

Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China

Ling Ling Zhang, MD

Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China

Xin Jian Wan, MD, PhD

Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China