In the pulmonary surgery group, more patients who developed AE-IP had received corticosteroid therapy preoperatively (60.0% vs 15.8%) than those who did not; serum CRP levels were also higher in the patients who developed AE-IP than in those who did not (0.54 mg/dL vs 0.21 mg/dL). Here, CRP is linked to incontinentia pigmenti.