One-Step Posterior and Anterior Combined Approach for L5 Retroperitoneal Schwannoma Eroding a Lumbar Vertebra

Figure 5

Postoperative spinal MRI. The mass was removed from the vertebral foramen up to the psoas muscle (a, b, and d). Resection of the lesion medially to the psoas muscle was achieved despite its firm adherence to the muscle itself and the risk of vascular injury (c, e, and f).

(a)

(b)

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(f)