Case Report: Reconstruction of the chest wall with titanium alloy plates after resection of a rare malignant spindle cell tumor of the sternum complicated by ankylosing spondylitis

This case report provides preliminary evidence that the combination of precise extended resection and chest wall reconstruction may achieve oncological radical cure in this specific patient. The procedure restored chest wall structure and function. These findings suggest the potential for favorable prognosis with this approach in similar complex cases of AS. This patient achieved 3-year disease-free survival. A complete dataset was provided including pulmonary function indices, exercise tolerance, and quality-of-life scores. These findings offer an important reference for clinical decision-making in similar complex cases.