Resection of a Recurrent Cervicomedullary Junction Fibromyxoid Sarcoma through a Far Lateral Approach.

 This study describes a far lateral approach for the resection of a recurrent fibromyxoid sarcoma involving the ventrolateral brainstem, with emphasis on the microsurgical anatomy and technique.  A far lateral craniotomy is performed in the lateral decubitus position and the transverse and sigmoid sinuses exposed. After opening the dura, sutures are placed to allow gentle mobilization of the sinuses. The recurrent tumor is immediately visible. The involved dura is resected and aggressive internal debulking is performed. Subarachnoid dissection gives access to the lower cranial nerves. The tumor is dissected off the affected portions of the brainstem. A dural graft is used to reconstitute the dura. Photographs of the region are borrowed from Dr. Rhoton's laboratory to illustrate the microsurgical anatomy.  The senior author performed the surgery. The video was edited by Dr. V.N. chart review, and literature review were performed by Drs. W.M. and J.B.  Outcome was assessed with the extent of resection and postoperative neurological function.  A near gross total resection of the lesion was achieved. The patient developed a left vocal cord paresis, but her voice was improving at 3-month follow-up.  Understanding the microsurgical anatomy of the craniocervical junction and ventrolateral brainstem and meticulous microneurosurgical technique are necessary to achieve adequate resection of lesions involving the ventrolateral brainstem. The far lateral approach provides an adequate corridor to this region. The link to the video can be found at: https://youtube/uYEhgPbgrTs .