Pneumatosis cystoides intestinalis complicated by gastric signet ring cell carcinoma misdiagnosed as gastrointestinal perforation: a case reportYongshuai Lin1, Weimin Wu1, Xin Zhao1, Jun Wang1*1Department of General Surgery, The 928th Hospital of the Joint Logistics Support Force, CPLA, Haikou, 570100, Hainan, China.*Corresponding author. E-mail: wj17547@163.com.
