They can extend through the sacral foramen to cause sacral nerve root compression.
肿瘤可通过骶孔生长而引起骶神经根压迫症状。
Methods: 43 cases of sacral nerve root compression without lumbar disc protrusion were treated with laminectomy or decompression of the intervertebral foramen.
方法：对43例无椎间盘突出的腰骶神经根压迫症行椎板切除或椎间孔减压术。
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