Symptomatic lumbar facet joint synovial cysts: clinical assessment of facet joint steroid injection after 1 and 6 months and long-term follow-up in 30 patients. - Parlier-Cuau,C.; Wybier,M.; Nizard,R.; Champsaur,P.; Le Hir,P.; Laredo,J-D. (Radiology, 1999)