Poster Session : PS 1419 ; Hemato-Oncology(Hematology) : A Confused Case with Double Primary Cancers of Renal Cell Carcinoma and Lung Cancer = Poster Session : PS 1419 ; Hemato-Oncology(Hematology) : A Confused Case with Double Primary Cancers of Renal Cell Carcinoma and Lung Cancer

다국어 초록 (Multilingual Abstract)

It is needed to distinguish between primary lung cancer and metastatic lung cancer in solitary lung nodule detected in patient with history of another solid cancer. But in case of multiplel lung nodules, we generally tend to consider the lung lesions as a metastatic lesion without biopsy. A 62 years old male presented with two tiny lung nodules (each nodule was located on each lung) which were detected after 18 months of right nephrectomy for renal cell carcinoma. At that time, the lesions were considered as metastatic renal cell carcinoma without biopsy by the attendant doctor. Although targeted therapies of RCC were given, the lung lesion was progressed and then the patients came to our hospital. We tried biopsy of the larger lung nodule and the pathologic result confirmed primary lung squamous cell carcinoma. So surgical resection was performed and pathologic staging revealed pT1N0. Contralateral lung nodule was too small to take biopsy, we decided to take close observation. Several months later, size of the remnant lung nodule was increased and biopsy was performed. At this time, the result was proven metastatic renal cell carcinoma and until now, he is taking everolimus everyday. We present a confused case of concurrence of metastatic lung cancer with a primary lung cancer.