Fig. 5From: Surgical treatment of a complex craniocervical malformation combined with posterior cranial fossa teratoma: a case report and literature reviewCT and MRI scan after revision surgery. a The compression of the ventral side of the brainstem and the upper cervical cord was significantly relieved, and the cervicomedullary angle returned to normal. b, c CT sagittal reconstruction image showed screws loosening and pull-outBack to article page