Multiple myeloma (MM) is a hematological malignancy characterized by the occurrence of plasma cell tumor within the bone marrow. Extramedullary plasmacytomas form a small percentage of plasma cell tumors, and although 80-90% of extramedullary lesions occur in the head and neck, pulmonary plasmacytomas are found to be a very uncommon clinical entity. Hereby, we describe a case of a patient with pulmonary plasmacytoma, who developed nodal and pulmonary MM with a pleural effusion, the radiological appearance of which mimicked bronchogenic carcinoma.