[Clinico-radiological picture of periradicular cysts in the lumbosacral region].

After a review of the modern views on the problem of the so called Tarlov's cysts the authors present a group of 20 patients with chronic low back pains in whom periradicular cysts were diagnosed demonstrating them by means of Dimer-X radiculography. In the light of an analysis of this material the authors reach the conclusion that there are no specific symptoms and signs which could make possible the diagnosis of Tarlov's cysts without contrast radiography of the dural sac. There are, moreover, no reliable data demonstrating that the clinical manifestations in patients with Tarlov's cysts are indeed caused by them since surgical verification demonstrates often other causes of pain.