Parachordomas are rare neuroepithelial tumours with glial differentiation that are histologically similar to chordomas but do not occur in the axial skeleton.
They are generally slow growing and non-disseminating, and sometimes have a late local recurrence after resection.
They usually occur in the deep soft tissues of the extremities or in the skin. Occasionally they may occur in the retroperitoneum.
They have a nonspecific imaging appearance on CT and MRI. Calcifications may be visualized in the masses at CT.