Primary pulmonary meningioma and minute pulmonary meningothelial-like nodules: Rare pulmonary nodular lesions requiring more awareness in clinical practice

Core Tip

Core Tip: Primary pulmonary meningiomas (PPM) and minute pulmonary meningothelial-like nodules (MPMN) are rare pulmonary lesions, which are difficult to differentiate from lung cancers due to similarities in clinical and imaging manifestations. To avoid misdiagnosis and overtreatment, PPM and MPMN should be considered in the differential diagnoses of pulmonary nodules of difficult clinical and/or imaging procedure diagnosis, particularly of asymptomatic patients. Differentiating PPM and MPMN from other pulmonary nodule diseases and assessing the malignancy of PPMs are difficult using only imaging-procedures, and histopathological examination thus remains the gold standard diagnostic procedure. Enhancing our understanding of MPMNs and PPMs and elucidating their pathogenesis will aid in the accurate differentiation of these lesions, to improve the clinical management of patients.