Paget's disease with vanishing bone pattern and spinal fusion

Area of Science:

• Orthopedics
• Radiology
• Pathology

Background:

• Paget's disease of bone is a chronic condition characterized by abnormal bone remodeling.
• It commonly affects the pelvis, spine, skull, and long bones.
• Typical imaging findings include bone expansion, cortical thickening, and sclerosis.

Observation:

• A rare case of Paget's disease involving the spine and pelvis is presented.
• Unusual imaging features were observed, including severe bony expansion and fatty infiltration, leading to a "vanishing bone" appearance.
• Additional rare findings included spinal and sacroiliac ankylosis.

Findings:

• The case demonstrates a unique and severe presentation of Paget's disease.
• The "vanishing bone" appearance, characterized by extensive fatty infiltration and bony expansion, is a significant radiological finding.
• The co-occurrence of spinal and sacroiliac ankylosis is exceptionally rare in this condition.

Implications:

• This case expands the understanding of the imaging spectrum of Paget's disease.
• It highlights the importance of recognizing unusual radiological features for accurate diagnosis.
• Further research into the pathogenesis of these rare manifestations may be warranted.