Clinical Research Directory

Inclusion Criteria: 1. Age ≥18 years old; 2. Patients with chest imaging findings indicating central lung lesions requiring further bronchoscopy; 3. Patients with neoplasm in the lumen that could be biopsied by bronchoscopy or operated; 4. Patient who has good compliance and sign informed consent; 5. The investigator believes that the subjects can understand the process of the clinical study, are willing and able to complete all the research procedures and follow-up visits, and cooperate with the research procedures. Exclusion Criteria: 1. Pregnant or lactating women; 2. No endotracheal/bronchial lesions were detected by bronchoscopy; 3. Allergic reaction to narcotic drugs in previous medical history; 4. The investigator believes that the subject is not suitable for bronchoscopy; 5. High-risk diseases or other special conditions for which the investigator considers the subjects unsuitable for clinical trials.