A slow-growing malignant bone tumor arising from the remnants of the notochord and occurring in the spine. It is characterized by a lobulated growth pattern, myxoid stroma formation, and the presence of physaliphorous cells. The disease is MONDO_0002894 (spinal chordoma). Also known as: chordoma of spinal column, chordoma of spine, chordoma of the spinal column, spinal Chordomas, spinal column chordoma.