Case Report: Identifying Andersson-Like Lesions in Diffuse Idiopathic Skeletal Hyperostosis.

Area of Science:

• Orthopedics
• Rheumatology
• Radiology

Background:

• Andersson lesions (ALs) in ankylosing spondylitis (AS) compromise spinal stability.
• Erosive discovertebral lesions in diffuse idiopathic skeletal hyperostosis (DISH) share similarities with ALs but are often unrecognized.
• This study identifies and characterizes Andersson-like lesions (ALLs) in DISH.

Observation:

• ALLs in DISH are primarily traumatic, occurring at focal stress points in ossified spinal segments.
• These lesions can be classified radiologically as transdiscal, transvertebral, or discovertebral.
• Patients with ALLs experience persistent back pain and reduced mobility.

Findings:

• The etiology, radiology, and clinical presentation of ALLs in DISH are detailed.
• Treatment strategies include conservative spinal immobilization and surgical fixation.
• Early recognition of ALLs in DISH is vital for maintaining spinal stability.

Implications:

• This research provides a framework for identifying ALLs in DISH, differentiating them from ALs in AS.
• Understanding ALLs facilitates early intervention, preventing further DISH deterioration.
• The findings are critical for preventing neurological sequelae in patients with DISH.