Biomedical subjects
Publications and source records attributed to R A Boedecker.
A new sign of multiple sclerosis, the contracting cord sign, is described. The myelographic demonstration of a large cord that subsequently decreases in size may suggest multiple sclerosis. Multiple sclerosis must be considered in the differential diagnosis of an enlarged spinal cord. Distinguishing between the collapsing cord and the contracting cord is discussed.
Twenty-three children with Williams "elfin-facies" syndrome were reviewed. A striking incidence of multiple bladder diverticula was found (8 children of 14 who had voiding cystourethrograms). The diverticula were usually not identifiable on excretory urography. Children generally have a low incidence of bladder diverticula (excluding "Hutch" diverticula), especially multiple diverticula; thus one should strongly consider the diagnosis of Williams syndrome and other connective tissue diseases when multiple bladder diverticula are identified.
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Thirteen patients with neural crest tumors were each studied with a radionuclide skeletal survey, a radiographic skeletal survey, and an iliac crest bone marrow aspiration. The RN skeletal survey proved to be more accurate that the radiographic skeletal survey in: 1) detecting the primary tumor; 2) demonstrating bony metastatic disease; and 3) evaluating response to therapy. The overall accuracy of the RN skeletal survey in detecting metastatic disease correlated with the results of bone marrow aspiration both in the initial detection of metastatic disease and the evaluation of response during therapy.
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A report of 99mTc-PIPIDA as a diagnostic biliary agent in children is presented. The laboratory values and radiologic examinations are included to demonstrate the clinical value of the agent in evaluating both congenital and acquired pediatric biliary tract abnormalities. The role of 99mTc biliary tract imaging in children is discussed.
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