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Analysis of clinicopathological features of orbital meningioma in 27 cases |
WANG Jia CAI Fengmei▲ ZHAO Ying ZHANG Ge QIAN Wei LI Yuanpeng ZHI Lingran WANG Huifang |
Department of Pathology, Xi’an People’s Hospital Xi’an Fourth Hospital, Shaanxi Province, Xi’an 710000, China |
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Abstract Objective To investigate the clinicopathologic features of orbital meningioma. Methods A total of 27 patients with orbital meningioma admitted to Xi’an People’s Hospital from October 2015 to June 2021 were collected, the clinicopathological features of the patients were analyzed retrospectively, and relevant literatures were reviewed. Results The median age of 27 patients with orbital meningioma was 50 years old, with 11 cases occurring in the right orbit and 16 cases in the left orbit. Most clinical symptoms were mainly eye pain, bloating, unclear vision, and protruding eyeballs or eye masses. There were 17 cases of meningeal epithelial cell type, one case of fibrous type, five cases of transitional type, three cases of atypical, and one case of clear cell type. A total of 27 patients were followed up for 1-68 months after surgery, with an average of 18.5 months. Among them, four cases recurred and the rest recovered well. Immunohistochemical results showed that somatostatin receptor-2, progesterone receptor, vimentin, and epithelial membrane antigen were positive in all patients, extremely low molecular weight keratin CAM5.2 and glial fibrillary acidic protein were negative in all patients. There were 25 cases of D2-40 positive, two cases of S-100 focal positive. Ki-67 appreciation index was about 1%-2% in 24 cases and 3%-8% in three cases. Conclusion The histological morphology of primary orbital meningioma is mainly meningeal epithelial cell type. The markers of tumor-related antibodies somatostatin receptor-2, progesterone receptor, Vimentin, epithelial membrane antigen, and D2-40 are helpful for diagnosis.
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