Idiopathic multiple lumbar disc calcification

Clinical Cases 18.12.2007
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Section: Musculoskeletal system
Case Type: Clinical Cases
Patient: 45 years, female
Authors: Mr Tariq Nasser MBBS, MRCS. Mr Saeed Al-Naser. MBBS, PgDip, MRCS Mr Omar Al-Omoush MBBS, MRCS
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AI Report

Clinical History

Intervertebral disc calcifications can occur due to many conditions, and usually occur at one or two levels. We report a case of calcification of all lumbar intervertebral discs without any obvious cause. This condition should be recognized as a cause of back pain.

Imaging Findings

A 45-year-old female presented with intermittent low back pain for few months. The patient experienced the pain daily which was restricting her usual activities. The pain was aggravated by standing and walking, not radiating to the lower limbs and there were no neurological symptoms. The pain was not relieved by non steroidal anti-inflammatory drugs or physiotherapy. There was no significant past medical history. On examination, the patient had full range of movements of the thoracic and lumbar spine. She had normal lumbar lordosis; SLR was 90° on both sides. There was no sensory or motor deficit. On x-ray the lumbar spine showed intervertebral disc calcification throughout the lumbar spine (4 lumbar discs), normal lumbar lordosis. Isotope bone scan did not show any focal abnormality. CT of the lumbar spine showed calcified discs at all levels of the lumbar spine. Calcifications were well contained within the discs’ annulus with no evidence of prolapse or protrusion at any level. There was no evidence of spinal canal stenosis. There was minor osteophytic lipping on two lumbar vertebrae and some degenerative changes in the facetal joints in the lower lumbar spine but no foraminal narrowing. Rheumatoid Arthritis screening test, full blood count, ESR, serum protein electrophoresis, CRP, blood electrolytes, thyroid and liver function tests were all normal. We treated this patient conservatively by pain killers and TENS machine at home. The pain is more tolerable now, and she is working as an activity organiser.

Discussion

Intervertebral disc calcification is a radiological diagnosis which can be asymptomatic or cause back pain and sciatica (1). Usually calcification occurs in the lumbar or thoracic spine in one or two discs (2). There are a number of conditions associated with intervertebral disc calcification: Ochronosis, hemochromatosis, chondrocalcinosis (sporadic or familial), hyperparathyroidism, poliomyelitis, acromegaly, amyloidosis and after spinal fusion (2,3). The radiological appearances of calcified intervertebral discs were classified into four groups by HV Crock: 1. Small discrete irregularly opaque shadows within the nucleus pulposus lying nearer to the posterior than the anterior boundary. 2. Widespread calcification of variable density giving the nucleus pulposus a fluffy outline. 3. Small discretely outline zones of calcification lying adjacent to one vertebral end plate but peripherally located in the nucleus pulposus. 4. Discrete aggregates of densely calcified material confined to the area of the nucleus pulposus. X-ray, CT scan and related investigations to diagnose or to rule out the mentioned associated conditions can help decide the mode of treatment. In our case, the calcification was of type 2, with no associations or obvious causes. All the possible causes were excluded by the investigations carried out. Conservative treatment improved the pain and the quality of life of our patient dramatically, especially after counselling the patient in details about the condition.

Differential Diagnosis List

Idiopathic multiple lumbar disc calcification

Final Diagnosis

Idiopathic multiple lumbar disc calcification

Liscense

Figures

CT scan showing the lumbar calcifications

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CT scan showing the lumbar calcifications

Lateral xray showing calcifications of all lumbar discs

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Lateral xray showing calcifications of all lumbar discs

AP xray showing calcifications of all lumbar discs

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AP xray showing calcifications of all lumbar discs