A case of primary pulmonary clear cell adenocarcinoma

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Primary pulmonary clear cell carcinoma is a histologically rare type of lung carcinoma. We report a case of primary pulmonary clear cell adenocarcinoma resected with thoracoscopic surgery. A 56-year-old man who underwent chemotherapy for malignant lymphoma was suspected of having two primary lung carcinomas in his left upper lobe. The tumors were diagnosed as adenocarcinoma of the lung with intraoperative histopathological diagnosis, so we performed thoracoscopic left upper lobectomy and node dissection. The postoperative histological/immunohistochemical diagnosis was primary pulmonary clear cell adenocarcinoma with mixed-type adenocarcinoma. A recurrence of the hilar lymph node was detected a month after surgery, and metastases of the brain, adrenal gland, and bone were detected five months after surgery. He has been undergoing chemotherapy.