Acromegaly – Lateral Dorsal Spine (Rad) Fig. 23.7 Acromegaly: lateral dorsal spine. In acromegaly new bone formation may occur around the vertebral bodies. This lateral view of the dorsal spine shows such changes at the anterior margins of the vertebrae. The anterior edge of the intervertebral discs can be clearly identified and the vertebral bodies are increased in their anteroposterior diameter. The new bone formation is usually more marked in the dorsal than in the lumbar