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SACRAL EXTRADURAL CYSTSA Rare Cause of Low Backache and SciaticaR. Q. Crellin 1; and E. R. Jones 1
1 King's College Hospital, London
1. Seven cases of sacral extradural cyst are reported. 2. The etiology and clinical features are discussed and the literature reviewed. 3. The differential diagnosis is discussed; certain features, useful in making the diagnosis of sacral extradural cysts, are recorded. 4. When a cyst causes symptoms excision brings relief. Because some cysts are symptomless, it is important to exclude an accompanying prolapsed intervertebral disc.
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