Chordoma is a type of cancerous (malignant) tumor that can occur in the bones of the spine and base of the skull.

Chordomas develop in leftover cells from the notochord (a cartilage-like structure). Most of the notochord is replaced by the spine during the first six months of development. Small areas can remain, however, and it is believed that chordomas can form in these areas.

Chordomas can occur anywhere along the spine, but most often occur at the base of the spine (sacrum), in the tailbone (coccyx), or at the base of the skull.

Case courtesy: Dr.ssa Sara Zanzani