Daping Hospital and the Research Institute of Surgery of the Third Military Medical University

This is a prospective, single-arm, multicenter, phase II clinical trial to evaluate the efficacy and safety of AZA（azacytidine）combined with the R-GemOx (rituximab, gemcitabine and oxaliplatin) regimen as first-line treatment in elderly diffuse large B-cell lymphoma (DLBCL) patients.

The goal of this observational study was to learn about the long-term clinical efficacy of conservative treatment in atlantoaxial dislocation patients without neurological deficit. The main question it aims to answer is:
Is surgical intervention always necessary in atlantoaxial dislocation patients without nerve deficit?
Patients who refuse surgical intervention will continue to be treated conservatively. Clinical outcomes will be summarized over five years of follow-up

Evaluate the safety and feasibility of single-port robotic surgery in breast-conserving surgery, compare and analyze the advantages and disadvantages of single-port robotic surgery and open surgery in terms of complications, postoperative complications, perioperative recovery effects, and safety in breast cancer breast-conserving surgery, in order to select a more effective and safe surgical method. Subjects who meet the inclusion criteria will enter the research process, with surgery including SPr-breast-conserving surgery or open-breast-conserving surgery, and the choice of the two surgical methods is based on the patient's financial situation and the availability of equipment;