Case Report Primary pulmonary meningioma: a case report and a review of the literature

Ectopic meningiomas are rare, and primary pulmonary meningiomas are even rarer. Most of them are benign, but malignant primary pulmonary meningiomas have been reported. They usually present as a solitary pulmonary nodule, and primary lung cancer or metastasis may be suspected on imaging. Here, we report a case of a 63-year-old female with primary pulmonary meningioma. The chest CT scan revealed a well-circumscribed large intrapulmonary nodule in the left lung, and was diagnosed with a mesenchymal tumor by lung biopsy at a local hospital. After thorough examinations, a surgical resection was performed to remove the upper lobe of the left lung and the masses. A postoperative pathological report confirmed that the tumor was an ectopic meningioma. Metastatic meningioma was excluded by brain and spine MRI scans.