A 50-year-old patient presents with a lesion in the midline involving the sacrum. It is found to be sclerotic. What is the most probable diagnosis -
Sclerotic lesion involving midline in the sacrum is likely to be chordoma.
It occurs most commonly at either end of notochord(midline) in following locations


Sacrococcygeal region
Clivus
Suprasellar region