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Primary pulmonary meningioma mimicking lung metastatic tumor: a case report
Ji-Zhuang Luo1, Cheng Zhan1, Xiang Ni2
1Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, People's Republic of China.
Background:
Primary pulmonary meningioma (PPM) is an extremely rare benign tumor. Previous reports indicated that CT features of PPM are single, solid, well-demarcated, homogeneous mass. In this study, we report a case of PPM with atypical CT features.
Case Presentation:
A 65-year-old female presents to clinic with 1-week acute upper respiratory tract infection. Her chest CT scan revealed a 25-29 mm, round-like, heterogeneous lobulated solitary pulmonary nodule in the right lower lobe. Based on the microscopic features and a wide range of immunohistochemical examinations including vimentine, progesterone receptor (PR), CD34 and S100, the mass was diagnosed as PPM after surgery.
Conclusion:
PPM is a rare disease, CT features of PPM could be heterogeneous and lobulated. Expression of vimentine, PR, CD34 and S100 helps to diagnosis of PPM.
Insights
Primary pulmonary meningioma (PPM) is a rare tumor. This case highlights atypical CT findings, showing a heterogeneous, lobulated mass, aiding diagnosis with immunohistochemistry.
Area of Science:
- Pulmonology
- Oncology
- Pathology
Background:
- Primary pulmonary meningioma (PPM) is an exceptionally rare benign tumor.
- Typical CT findings include single, solid, well-demarcated, homogeneous masses.
- This report details a rare case with atypical CT features.
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