Primary pulmonary meningioma presenting as a micro solid nodule: A rare case report

Abstract

An ectopic meningioma, such as a primary pulmonary meningioma (PPM), is a rare type of tumor that primarily originates outside of the central nervous system. A 65-year-old female patient underwent a thoracoscopic lung wedge resection of the right lower lobe for a micro solid nodule detected via computed tomography. The histologic result revealed a PPM. PPMs manifested with micro solid nodules are a very rare occurrence in clinical practice. Increased awareness of the clinical and pathological characteristics of this rare disease can assist thoracic surgical teams to apply adequate management.

Keywords: Immunohistochemistry; lung micro nodule; primary pulmonary meningioma.

Figure 1

Computed tomography images of micro nodule in the right lower lobe: (a) coronal plane, (b) cross plane, and (c) sagittal plane.

Figure 2

Hematoxylin and eosin (H&E) and immunohistochemical staining images: (a) H&E staining, (b) CD56 (+), (c): epithelial membrane antigen (+), and (d) progesterone receptor (+).