枕骨大孔区肿瘤，多数是良性肿瘤。
目的：探讨治疗枕骨大孔区畸形的手术方法。
Objective: To explore the operation modalities for anomalies of the foramen magnum region (AKMR).
颅颈部畸形叉称枕骨大孔区畸形，涉及的疾病较多。
Malformation of the craniocervical region, also known as malformation of the foramen magnum region, relates to many diseases.
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