What happened, in summary

A 56-year-old man sought care after 6 months of unexplained chest tightness. Imaging found a mass at the top of the right lung, close to the chest wall, but no evidence of cancer outside the chest.

Because of the tumor’s difficult location near major blood vessels, his surgical team planned a combined approach. He underwent removal of the right upper lung lobe together with systematic lymph-node dissection. During the operation, the tumor was carefully separated from the nearby subclavian artery.

Pathology confirmed invasive non-mucinous lung adenocarcinoma. The tumor measured 4.5 cm, and all removed lymph nodes were negative for cancer. The final diagnosis was Stage II lung cancer.

He recovered well after surgery and was discharged on the fourth postoperative day. Follow-up was arranged every 6 months. At the 2-year assessment, he remained in good condition with no evidence of local recurrence or distant metastasis. His course shows a successful surgical outcome despite the technical challenge of a tumor located at the lung apex near major chest structures.