# Primary Pulmonary Meningioma With Associated Multiple Micronodules: A Case Report With Comprehensive Diagnostic Overview

## TL;DR

A rare case of primary pulmonary meningioma in a 73-year-old man is reported, highlighting diagnostic challenges and treatment considerations for this uncommon lung tumor.

## Contribution

This case report adds to the limited literature on primary pulmonary meningioma and emphasizes the need for individualized treatment planning.

## Key findings

- A 73-year-old male was diagnosed with epithelioid primary pulmonary meningioma via histopathological analysis after wedge resection.
- Surgical resection with maximal lung preservation was chosen due to the patient's age and tumor characteristics.
- The case underscores the rarity and diagnostic complexity of primary pulmonary meningioma.

## Abstract

Primary pulmonary meningioma (PPM) is an exceedingly rare neoplasm originating in the meninges within the lung. Despite sharing similarities with its central nervous system (CNS) counterparts, PPM presents unique diagnostic challenges and therapeutic considerations owing to its infrequent occurrence.

This case report describes a 73‐year‐old male who underwent chest computed tomography (CT), which revealed a mass in the posterior basal segment of the right lower lobe, suggestive of a low‐grade malignant tumor approximately 30–40 mm in size. Single‐port video‐assisted thoracoscopic surgery (VATS) was performed to resect the mass via localized lesion excision (lung wedge resection). Intraoperative frozen section pathology indicated a low‐grade malignant epithelial tumor, leading to a decision for maximal lung function preservation, considering the patient's advanced age. The surgical team opted for a localized excision to ensure negative margins. Histopathological analysis confirmed the diagnosis of epithelioid PPM, a rare subtype even among PPM cases (World Health Organization [WHO] Grade I). The patient was discharged 9 days after surgery without complications and resumed normal daily activities 1 month postoperatively. The rarity of PPM precludes a standardized treatment protocol, with surgical resection as the primary approach. However, the efficacy of adjunctive therapies remains uncertain due to limited evidence.

This case report contributes to a better understanding of PPM and emphasizes the importance of a comprehensive diagnostic evaluation and individualized treatment planning for this rare entity.