Pulmonary sclerosing pneumocytoma mimicking lung cancer: Case report and review of the literature

Pulmonary sclerosing pneumocytoma (PSP) is a rare benign neoplasm that predominantly affects middle‐aged Asian women. PSP is often asymptomatic and demonstrates a solitary pulmonary nodule on radiologic examination. We report a case of PSP initially misdiagnosed as lung cancer because of strong 18F‐fluorodeoxyglucose (FDG) uptake revealed by 18F‐FDG positron emission tomography‐computed tomography scan. After surgery, pathology revealed that the tumor cells were immunopositive for epithelial membrane antigen and thyroid transcription factor‐1. The patient has been followed up without complication or recurrence.