Retroperitoneal fibrosis after anterior spinal fusion

Abstract

Three patients with lumbar anterior spinal fusion (two with Dwyer instrumentation) developed retroperitoneal fibrosis in relation to the operative site. This complication is possibly a reaction to the retroperitoneal insult. Haematoma, low-grade infection and metallic implant are other likely contributory factors. Its occurrence is affected by the laterality of surgical approach and extent of dissection. Radiologists should be aware of such a complication when investigating post-fusion patients. Early diagnosis and treatment prevent further renal damage.