Postoperative pathology confirmed a complete tumor resection with negative margins (R0), Postoperative pathological findings: (anterior mediastinum) atypical carcinoid tumor (approximately 5 mitoses/10 high‐power fields, hot spot area Ki‐67 proliferation index approximately 40%+); additional specimens from (anterior mediastinum) adipose tissue and (left margin) showed no evidence of tumor tissue. The gene discussed is MKI67; the disease is neoplasm.