Sacrococcygeal chordomas are rare and difficult to diagnose tumors.
Because of minimal response to chemotherapy and radiotherapy, resections with wide margins at initial surgery is the most important factor influencing local recurrence 1).
Gavriilidis P, Kyriakou D. Sacrococcygeal chordoma, a rare cause of
coccygodynia. Am J Case Rep. 2013 Dec 19;14:548-50. doi: 10.12659/AJCR.889688.
PubMed PMID: 24376906; PubMed Central PMCID: PMC3873153.