2016 Volume 65 Issue 1 Pages 65-69
【Background】We report a case of unclassified lung carcinoma diagnosed after the treatment for small cell lung carcinoma.【Case】The patient is a man of 60 years old. The patient was treated with systemic chemoradiotherapy for small cell lung carcinoma developed in the right lower lobe S8（T1bN2M0）．Regardless of achieving complete remission, the patient developed metachronous solitary lung nodule in the same lobe（S10）．The nodule could be controlled for 16 months by chemotherapy against small cell carcinoma. Because the nodule became to be chemotherapy-resistant, the patient underwent surgery. Postoperative pathological examination revealed features of being unclassified carcinoma of the lung. The patient is aliving without recurrence 29 months after the operation.【Conclusion】Although it remains unknown whether the secondary lung lesion is metastatic or second primary lesion, surgery played a role as a curative intent treatment.
