PDF(Pubmed)
Abstract：
A simple bone cyst (SBC) in the posterior lumbar bone structure is very rare. Here, we report a case of SBC at the L5 lumbar lamina with venous obstruction associated with ligamentum flavum thickening. A 59-year-old woman presented with intermittent claudication due to low back pain and bilateral sciatica. A lumbar MRI showed L4-5 lumbar spinal canal stenosis and a T2-weighted image hyperintense lesion in the L5 lamina. Imaging four years earlier showed no lesions in the L5 lamina. Her symptoms improved after lumbar decompression surgery. The L5 lamina lesion was SBC, leading to a diagnosis of venous infarction. The involvement of neovascularization in the mechanism of degenerative hypertrophy in the ligamentum flavum was suggested. In this case, increased venous perfusion and venous obstruction were involved in the formation of the bone cyst.
摘要：
腰椎后骨结构中的单纯骨囊肿（SBC）非常罕见。这里,我们报告了一例L5腰椎椎板处的SBC，并伴有黄韧带增厚的静脉阻塞。一名59岁妇女因腰痛和双侧坐骨神经痛而出现间歇性跛行。腰椎MRI显示L4-5腰椎管狭窄，L5椎板有T2加权图像高强度病变。四年前的成像显示L5椎板无病变。腰椎减压手术后，她的症状有所改善。L5椎板病变为SBC,导致静脉梗塞的诊断。建议新血管形成参与黄韧带退行性肥大的机制。在这种情况下,静脉灌注增加和静脉阻塞参与了骨囊肿的形成。
