Sandwell S, et al. – For treating positional headaches attributed to postoperative lumbosacral pseudomeningoceles, researchers tested the efficacy and safety of blood patch injection. Findings demonstrated that symptomatic postoperative lumbosacral pseudomenigocele can be effectively treated with pseudomeningocele aspiration followed by blood patch. Moreover, this represented a minimally invasive alternative to surgical re–exploration with durotomy closure. It was noted that injections displayed the best efficacy when performed early after pseudomeningocele development.