Abstract

PINHO, André et al. Variante sólida do quisto ósseo aneurismático da 5ª vértebra lombar. Rev. Port. Ortop. Traum. [online]. 2012, vol.20, n.4, pp.453-458. ISSN 1646-2122.

There are few reported cases of solid variant of aneurysmal bone cyst (ABC) involving the spine and even less located in the lumbar vertebral body. However, this clinical entity must be considered, even when there is predominantly affects the vertebral body. The authors describe a case of a man 23 years of age who had low back pain of insidious onset and right leg L5 with partial response to NSAIDs. Computed tomography and magnetic resonance imaging revealed a lytic lesion involving the body and pedicles of the L5 vertebra. The treatment consisted of percutaneous fixation back (L4-S1) and needle biopsy followed on 2nd time anterior approach with corporectomy L5 and spacer filled with autologous bone graft Histopathological examination of the resected material was consistent with the solid variant of ABC, confirming the results of the biopsy needle. With three years of follow-up no signs of local recurrence on MRI. The solid variant of ABC should be considered in the differential diagnosis of lytic lesions expanding, including those involving the vertebral body. Magnetic resonance imaging and computed tomography provide useful information, but only a biopsy allows a definitive diagnosis. Radical excisions provide a good clinical outcome, and minimize the risk of local recurrence

Keywords : Solid variant; aneurismal bone cyst; posterior percutaneous fixation; corporectomy; spacer.

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