Spinal intramedullary hemangioblastoma and schwannoma collision tumor: illustrative case

Author:

Neal Matthew T.1,Richards Alexandra E.1,Curley Kara L.1,Donev Kliment2,Lyons Mark K.1,Kalani Maziyar A.1

Affiliation:

1. Department of Neurosurgery, Mayo Clinic Arizona, Phoenix, Arizona; and

2. Department of Pathology, Mayo Clinic Minnesota, Rochester, Minnesota

Abstract

BACKGROUNDIntramedullary spinal cord tumors represent a minority of intradural tumors. Among intramedullary spinal cord tumors, hemangioblastomas are uncommon, and schwannomas are extremely rare. Collision tumors are histologically distinct tumors that are intermingled and growing together.OBSERVATIONSIn this report, the authors describe a patient with a cervical intramedullary collision tumor involving a hemangioblastoma and schwannoma. To the authors’ knowledge, no prior spinal intramedullary collision tumor involving multiple neoplasms has been described. The patient’s presentation and management are described.LESSONSClinicians should consider the possibility of collision tumors when evaluating intramedullary spinal cord tumors, especially when patient presentation and radiographic findings are atypical. When tumors with similar radiographic characteristics form collision tumors, distinction using preoperative imaging can be extremely challenging. In addition, surgical management of intramedullary collision tumors, like that for all intramedullary spinal cord tumors, should involve meticulous perioperative care and a methodical surgical technique. Maximal safe resection will depend upon histopathological diagnosis, anatomical location of the tumor, presence of distinct dissection planes, and stability of neuromonitoring. Finally, ongoing research on the genetics of intramedullary spinal cord tumors may identify underlying genetic links for intramedullary hemangioblastomas and schwannomas.

Publisher

Journal of Neurosurgery Publishing Group (JNSPG)

Subject

Management Science and Operations Research,Mechanical Engineering,Energy Engineering and Power Technology

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