Primary biliary cholangitis presenting with granulomatous lung disease misdiagnosed as lung cancer: A case report

Figure 1 Lung imaging before and after lobectomy. A: Chest computed tomography (CT) showed two high-density pulmonary nodules in the posterior basal segment of the left lower lobe; B: Chest CT revealed a new pulmonary nodule in the right lower lobe (left lateral position).

Figure 2 Hematoxylin–eosin staining of the biopsy specimen. A: Granuloma formation; B: Pulmonary interstitium infiltrated of lymphocytes, plasma cells, and histiocytes.

Figure 3 Pulmonary imaging findings on post-treatment review. A: After approximately 20 d of ursodeoxycholic acid (UDCA) and methylprednisolone treatment, the nodular shadow was improved in chest computed tomography (CT) images; B: High-resolution thoracic CT images revealed significant improvement in the nodular shadow after > 6 mo of UDCA and methylprednisolone treatment.