[Scar cancer of the lung: report of 3 cases & review of literature].

Three cases with scar cancer of the lung were presented. One was explored and found unresectable and the other two had pneumonectomy. No long time survival was found after operation. These facts depicted that the tumor is higher malignant because of early lymphatic and hematogenous metastasis. The prognosis is poor. One case of them was given preoperative radiotherapy was carried our in one case and there was no obvious response. The clinicopathologic characteristics of the disease, the diagnostic standards and the relationship between the scar and cancer were discussed with a review of literature.