• Feng Xu, Zhisen Tian, Zhigang Qu, Liyu Yao, Congcong Zou, Wanrong Han, Caihong Zhang, Changfeng Fu, and Yuanyi Wang.
• Department of Spine Surgery, The First Hospital of Jilin University.
• Medicine (Baltimore). 2020 Jun 19; 99 (25): e20814.

RationaleSpinal meningioma is the second most common spinal neoplasm that commonly occurs in middle-aged women. As a rare histological variation of meningioma, completely ossified meningioma (OSM) and its standard surgical strategies have been reported. However, the surgical outcomes of elderly OSM cases (age >70) are less investigated. Herein, we intend to present an elderly OSM case and review the elderly OSM cases in published literatures.Patient ConcernsAn 85-year-old female presented with 10-year history of back pain and developed radiating pain on her left lower extremity within the last 2 weeks.DiagnosesA magnetic resonance imaging scan revealed an intradural tumor at the T11 level. A computed tomography scan demonstrated that the mass was completely ossified and had distinct borders (D-F). In a dynamic contrast-enhanced magnetic resonance imaging scan, the mass presented as a lateral intradural extramedullary tumor with abundant blood supply ().InterventionsThe patient underwent en bloc intradural tumorectomy via posterior approach.OutcomesAfter surgery, the patient's pain was relieved. However, the patient spent another 3 weeks in hospital due to a series of post-surgery complications, including hypostatic pneumonia, pulmonary heart failure, hydrothorax in both thoracic cavities, hypoproteinemia, and deep venous thrombosis on both of her legs. The complications recovered after 3-weeks treatment. In 1-year follow up, no additional symptom was found and the patient was recurrence free.LessonsOur report indicated that the surgical outcome can be satisfying in elderly OSM patients, while the post-operative complications frequently occur due to the poor physical condition of elderly patients. As a result, treatment of peri-operative complications of elderly OSM patients also deserves greater attention along with surgical resection.

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