Fig. 3　Changes in chest X-rays of Patient 2. (a) Slight blunting of the costophrenic angles in the right lung at the time of the first visit to our hospital. (b) Worsening of right pleural effusion (arrow) and multiple shadows in the left lung (arrowhead) due to inflammation of rheumatoid arthritis. (c) Multiple nodules in both lungs at the diagnosis of LPD (arrowheads). (d) The nodules disappeared 5 months after discontinuation of MTX.