Lung cancer associated with sarcoidosis is unusual. The few reported cases of coexistence of both disorders, as well as our own cases were reviewed. We described two cases of operatively resected lung cancer associated with sarcoidosis. Although the computed tomography of the chest showed swelling of hilar and mediastinal lymph nodes, the histopathological examination of the excised lymph nodes of both cases revealed no metastasis. Case 1. A 61-year-old woman who had been treated for histopathologically diagnosed sarcoidosis for 6 years, was admitted to our hospital because of a nodular shadow in the right upper lung field which had slowly grown in size from her first visit. Preoperatively a diagnosis of adenocarcinoma was made by transbronchial tumor biopsy. Right upper lobectomy was performed, and histopathological examination revealed the coexistence of papillary adenocarcinoma, bronchiolo-alveolar type, with non-caseating granulomas in all drainage lymph nodes but no metastasis. Case 2. A 73-year-old male was admitted to our hospital for detailed investigation of an abnormal shadow on chest X-ray detected in a mass survey. The chest X-ray showed the coin lesion of the right lower lung field and bilateral hilar lymph node enlargement. By comparison with previous chest X-ray films, the hilar lymph nodes enlargement showed persistently at least for four years. Transbronchial biopsy revealed adenocarcinoma. Right lower lobectomy was performed, and histopathological examination revealed the coexistence of papillary adenocarcinoma and diffuse non-caseating epithelioid granulomas in hilar lymph nodes but no metastasis.