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A patient who received sulfasalazine monotherapy for RA. Afterward, UIP-like lesions appearing as reticulations and honeycombing extended with worsening of the patient’s respiratory symptoms, and wall thickening in the areas of honeycombing were also present at 3 years and 6 months after the initial image. After two courses of pulse dose methylprednisolone followed by low-dose prednisolone, wall thickening had improved by six months later.
