• Andrea Gennaro Ruggeri, Benedetta Fazzolari, Davide Colistra, Martina Cappelletti, Nicola Marotta, and Roberto Delfini.
• Department of Neurology and Psychiatry, Neurosurgery Unit, Sapienza University of Rome, Rome, Italy.
• World Neurosurg. 2017 Jun 1; 102: 406-412.

ObjectiveTo analyze outcomes of patients surgically treated for calcified spinal meningiomas and to determine factors associated with surgical morbidity.MethodsBetween January 2000 and June 2013, a total of 54 patients underwent surgical resection of a spinal meningioma: 37 of these cases showed various degrees of calcification, confirmed by histopathologic analysis. The clinical evaluation was performed according to the American Spinal Injury Association Impairment Scale. At the last follow-up, neurologic status improved in 19 cases and remained unchanged in 20 cases; just 1 case worsened. According to the American Spinal Injury Association Impairment Scale, neurologic status was classified into 3 levels: poor (A + B), fair (C), and good (D + E). Neurologic status improvement (NSI) during postoperative time (considered as a transition from one lower level to the higher) was analyzed in relationship to the patient's age, length of clinical history, spine level, meningioma's position inside the spinal canal, and its degree of calcification.ResultsA statistically significant relationship between NSI and the degree of ossification of the meningioma was observed. in particular, a direct relationship with microcalcified meningiomas and an inverse relationship with ossified meningiomas. No relationship was observed between NSI and patient's age, length of clinical history, and the site of the lesion into the vertebral canal.ConclusionsThe univariate analysis confirms that the degree of calcification affects the outcome, because extensive tumor calcification is associated with an increased surgical morbidity probably.Copyright © 2017 Elsevier Inc. All rights reserved.

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