Matsuo Somei, Kanauchi Naoki
Thoracic Surgery, Nihonkai General Hospital, Sakata, JPN.
Cureus. 2024 Feb 29;16(2):e55204. doi: 10.7759/cureus.55204. eCollection 2024 Feb.
Primary pulmonary meningiomas (PPMs) are rare meningothelial proliferation that lacks characteristic imaging findings, making their distinction from other peripheral lung tumors challenging. Therefore, surgical resection is often performed for the diagnosis and treatment of PPM. Herein, we describe a surgical case of PPM that grew over 10 years. A 63-year-old woman was referred to our department due to right middle lobe lung tumor enlargement. No significant symptoms were observed. Chest computed tomography revealed a tumor in the middle lobe of the right lung. F-18 fluorodeoxyglucose positron emission tomography showed accumulation in the nodule; thus, lung cancer could not be ruled out. Therefore, the preoperative differential diagnosis was cStageIB lung cancer. A right middle lobectomy was performed, and a histopathology examination revealed meningioma. There were no primary lesions in the head and whole spine magnetic resonance imaging, thus, a final diagnosis of PPM was made. Cautious observation is required postoperatively due to the possibility of recurrence.
原发性肺脑膜瘤（PPM）是一种罕见的脑膜上皮增殖性病变，缺乏特征性影像学表现，使其与其他周围型肺肿瘤的鉴别具有挑战性。因此，手术切除常被用于PPM的诊断和治疗。在此，我们描述一例生长超过10年的PPM手术病例。一名63岁女性因右中叶肺肿瘤增大被转诊至我科。未观察到明显症状。胸部计算机断层扫描显示右肺中叶有一个肿瘤。F-18氟脱氧葡萄糖正电子发射断层扫描显示结节处有放射性积聚；因此，不能排除肺癌。所以，术前鉴别诊断为ⅠB期肺癌。行右中叶切除术，组织病理学检查显示为脑膜瘤。头颅和全脊柱磁共振成像未发现原发性病变，因此，最终诊断为PPM。由于存在复发的可能性，术后需要谨慎观察。
