Schmorl’s NodesDz

Last updated: October 31, 2014

Synonyms: Cartilaginous nodes.

ICD-9 Code: Unspecified, 722.30; lumbar or lumbosacral, 722.32; thoracic, 722.31.
ICD-10 Code: M51.4

Definition: Schmorl’s nodes are cartilaginous extrusions of disc material (nucleus pulposus) through the vertebral endplate into the body of the vertebrae. They are often incidental asymptomatic findings on radiographs.

Etiology: Schmorl’s nodes may be idiopathic or associated with disorders that weaken or disrupt vertebral endplates or body (e.g., intervertebral osteochondrosis, Scheuermann’s disease, trauma, hyperparathyroidism, osteoporosis, infection, neoplasm).

Demographics: Schmorl’s nodes are more common in men than women.

Cardinal Findings: Schmorl’s nodes are often asymptomatic but may produce local mechanical pain. They are most frequently found at the lower endplate in the lower thoracic and upper lumbar vertebrae.

Uncommon Findings: Thoracic kyphosis may be seen in young individuals with Scheuermann’s disease.

Diagnostic Tests: Conventional radiography is used.

Imaging: On radiographs, vertebral lesions appear as radiolucent (round or irregularly shaped) areas surrounded by sclerosis. They may also be visualized by CT or MRI.

Differential Diagnosis: Intervertebral osteochondrosis, Scheuermann’s disease, trauma, hyperparathyroidism, osteoporosis, infection, and neoplasm should be considered.

Therapy: Usually no therapy is required. Analgesic agents may be used for pain.

 

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