A Case of Pulmonary Nodular Lymphoid Hyperplasia Responding to Corticosteroid Treatment

Pulmonary nodular lymphoid hyperplasia (PNLH) is a rare non-neoplastic disease that presents with mass lesions in the lung. It is radiologically difficult to differentiate it from adenocarcinoma of the lung or pulmonary lymphoma. There has been no consensus regarding the treatment of PNLH; however, in many case series, patients usually undergo surgical resection for diagnostic and therapeutic purposes. Here, we present the case of a 60-year-old Chinese male who presented with cough and hemoptysis. A computed tomography scan of the thorax revealed a mass-like lesion. A biopsy was performed which showed lymphocytic pneumonitis. He was treated with a tapering dose of corticosteroids with good clinical and radiological outcomes. Upon a subsequent review of the case, a diagnosis of PNLH was made. This case report suggests that corticosteroids may be an alternative therapy to surgical resection. They have the advantage of being non-invasive and can be used in patients who are otherwise not surgical candidates due to other comorbidities. However, further research is required before we can recommend corticosteroids as a treatment for PNLH.