Primary extracranial meningiomas are rare outside the head and neck region.Patient concerns:
A 44-year-old female patient had chest pain for more than 1 year.Diagnoses:
Preoperative chest computed tomography (CT) scan revealed a nodule in the right lower lobe, 1.8 cm in diameter. Tumor tissues were examined by immunohistochemistry for vimentin and S-100.Interventions:
Histopathologically, the tumor was characterized by whorled nests of spindle-shaped cells accompanied by psammoma bodies. Immunohistochemistry demonstrated tumor cell positivity for vimentin and S-100. This case was diagnosed as a primary pulmonary meningioma. The tumor was removed by a thoracoscopic pulmonary wedge resection.Outcomes:
Postoperative cranial and spinal CT scan did not show any intracranial or spinal mass. No recurrence of the tumor was reported at the time of writing up this case report.Lessons:
A primary pulmonary meningioma should be considered in the differential diagnosis workup of pulmonary nodules.