[Rheumatoid Lung Nodule could be Diagnosed by Pulmonary Biopsy:Report of a Case].

A 60-year-old woman was referred to our department for further examination for chest abnormal shadow in the right upper lobe. She had a past history of rheumatoid arthritis. Positron emission tomography-computed tomography (PET-CT) showed mild abnormal accumulation of fluorodeoxyglucose (FDG). Because of lung cancer could not be denied, she underwent partial resection of the right upper lobe and the nodule was diagnosed as a rheumatoid nodule by pathology.