title: Surgical pathway seeding of clivo-cervical chordomas.
abstract: Objective Clival chordomas are slow-growing aggressive tumors that originate from the extra-axial remnants of the notochord. Current management of these tumors use surgical resection combined with radiation therapy. Given the location and invasive nature of these tumors, complete resection is difficult. A variety of both open and endoscopic therapeutic approaches have evolved and combined with the improvements in proton therapy, long-term control of these tumors appears to be improving. However, in recent literature the relatively rare complication of surgical seeding or surgical pathway recurrence has been reported. We report a case of surgical seeding following primary resection and review the world literature regarding surgical pathway recurrence. Study Design Retrospective chart review and review of current literature. Methods We report a case of a patient with a large chordoma that required treatment with a staged endoscopic endonasal and external transcervical approach. The patient subsequently developed recurrent disease along the cervical skin incision due to surgical seeding. Literature review and case reports were identified by a comprehensive search of Medline for the years 1950 to 2012. Results The overall surgical pathway recurrence rate for clival chordoma resection based on analysis of the open nonendoscopic published case studies was 14 of 497 (2.8%). Conclusion Tumor seeding can occur anywhere along the operative route and is often outside the field of radiotherapy. Increased awareness of this rare occurrence is necessary. The use of novel techniques to minimize exposure to tumor including primary endoscopic resection and so-called clean oncologic technique may help limit tumor seeding.
  
  
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authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, United States.
authors.forename: Alfred Marc Calo
authors.initials: AM
authors.lastname: Iloreta
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, United States.
authors.forename: Gurston G
authors.initials: GG
authors.lastname: Nyquist
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, United States.
authors.forename: Mark
authors.initials: M
authors.lastname: Friedel
authors.affiliation: Division of Neuro-Oncologic Neurosurgery, Department of Neurological Surgery, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, United States.
authors.forename: Christopher
authors.initials: C
authors.lastname: Farrell
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, United States.
authors.forename: Marc R
authors.initials: MR
authors.lastname: Rosen
authors.affiliation: Division of Neuro-Oncologic Neurosurgery, Department of Neurological Surgery, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, United States.
authors.forename: James J
authors.initials: JJ
authors.lastname: Evans
keywords: chordoma; clivus; endoscopic surgery; skull base; surgical seeding