[Plasma cell granuloma in the lung and mediastino-pulmonary sarcoid lesions (author's transl)].

The authors report a case of inflammatory plasma cell pseudo-tumor in the lung associated with mediastino-pulmonary sarcoid histological lesions. Diffusion of the latter to pulmonary parenchyma, the intensity of the follicular reaction in mediastinal lymph nodes together with a positive Kveim test suggest the fortuitous association of a mediastinal-pulmonary sarcoidosis with a plasma cell granuloma.