Um, Letâs Rethink That Salute (1930s) Again, in his book To the Flag: The Unlikely History of the Pledge of Allegiance, Richard J. Ellis explains that by the mid-1930s, Americans had begun to notice eerie similarities between the Bellamy salute and the âHeil Hitlerâ salute.
A lumbar puncture may be used to collect a sample of cerebrospinal fluid in order to detect the presence of certain types of cancer or infection. Lumbar punctures may also be used to inject medications, such as spinal anesthesia or chemotherapy drugs.
CSF cytology and HIV serology were both negative. EMG, however, confirmed the clinical findings of polyradiculopathy. T1W and T2W MRI of the lumbar spine demonstrated diffuse thickening of the nerve roots of the cauda equina, which enhanced following intravenous gadolinium administration (Figs. 1 and 2). No parenchymal involvement was seen.