hi R Mechtler LL Kamran S et al. MRI findings in lumbar puncture headache syndrome: 53 abnormal dural-meningeal and dural venous sinus enhancement. Clin Imaging 1999; 23:73. 54 Mokri B Atkinson JL. False pituitary tumor in CSF leaks. Neurology 2000. 55:573. Alvarez-Linera J Escribano J Benito-Leon J et al. Pitu