Primary pulmonary meningioma: A case report

Abstract

Rationale: 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.

Figure 1

Plain (A) and contrast CT scan (B) of the lungs of a 44-year old female patient diagnosed with a primary pulmonary meningioma. CT = computed tomography.

Figure 2

A section of the yellowish-white portion of the tumor tissue showing elongated spindle-shaped cells and a delicate fibroconnective tissue arranged in whorls (H&E, ×100). Psammoma bodies are also observed.