A first case report of pulmonary hyalinizing granuloma associated with immunoglobulin A nephropathy

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Rationale:Pulmonary hyalinizing granuloma (PHG) is a rare benign disease that has been shown to be associated with the deposition of immune complexes in the lung parenchyma caused by infection or autoimmune diseases. There have been no reports of PHG in association with immunoglobulin A nephropathy (IgAN).Patient concerns:A 30-year-old woman visited with a 12-month history of dyspnea on exertion and cough that had worsened 1 month before her visit.Diagnosis:PHG associated with IgAN.Interventions:Steroid pulse therapy was performed.Outcomes:The patient was discharged uneventfully.Lessons:We present a case of PHG presenting as multiple pulmonary nodules mimicking metastatic lung cancer, which was diagnosed using wedge resection of the right middle lobe through video-assisted thoracoscopic surgery.

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