title: Delayed retroperitoneal haematoma after failed lumbar plexus block.
authors.forename: D T
authors.initials: DT
authors.lastname: Hsu
mesh_terms: D006406:Hematoma / Q000209:etiology*; D006489:Hemostatic Techniques; D006801:Humans; D008160:Lumbosacral Plexus; D009407:Nerve Block / Q000009:adverse effects*; D011183:Postoperative Complications; D012187:Retroperitoneal Space