The tumor volume and the quality of the tumor resection were evaluated by MRI according to the Kenzaki classification. The facial nerve function was evaluated according to the House and Brackmann classification. The type of the cystic SV according to the position of the cyst and the thickness of the cystic wall was classified into type A and B according to the Piccirillo, et al. classification (PC)....

In this study, 46 patients who were operated on for Type I Chiari malformation (CM) in our clinic since 2010 were included. The preoperative and postoperative cranial and spinal MRI examinations of all patients were compared between the two groups in terms of hydrocephalus, tonsillar herniation level, the presence and level of syringomyelia, osseous anomalies, postoperative cisterna magna formation, postoperative obex structure, and syringomyelia status....