Post-shunting corpus callosal signal change and review of the literature |
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| Affiliation: | 1. Department of Radiology, The Royal Melbourne Hospital, Parkville, VIC, Australia;2. Faculty of Medicine, Dentistry, and Health Sciences at the University of Melbourne, Parkville, Australia;1. Resident in Internal Medicine, Mayo School of Graduate Medical Education, Rochester, MN;2. Advisor to Residents and Consultant in Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN;1. Central Michigan University College of Medicine, Mount Pleasant, MI, USA;2. Michigan State University, Division of Public Health, College of Human Medicine, Flint, MI, USA;1. Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville, TN, United States;2. Florida State School of Medicine, Orlando, FL, United States;3. Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY, United States;4. Charlotte Neurosurgical Associates, Charlotte, NC, United States;5. Orthopaedic of Steamboat Springs, Steamboat Springs, CO, United States;1. Movement Disorders Service and Section of Neurology, Institute for Neurosciences, St. Luke’s Medical Center, Quezon City, Philippines;2. Department of Neurosciences, College of Medicine, Philippine General Hospital, University of the Philippines Manila, Manila, Philippines;3. Department of Clinical Epidemiology, College of Medicine, University of the Philippines Manila, Philippines;4. Section of Neurology, Institute for Neurosciences, St. Luke’s Medical Center, Quezon City, Philippines;5. Section of Endocrinology, Department of Medicine, St. Luke’s Medical Center, Quezon City, Philippines |
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| Abstract: | MRI signal changes in the corpus callosum can be seen in 8.3% of patients following shunt insertion for obstructive hydrocephalus. Several causes have been hypothesised, including mechanical compression, decompression associated oedema and ischaemia, and overshunting. We present a case of a patient with a pineal tumour of intermediate differentiation (WHO grade III), which had caused long-term obstructive hydrocephalus due to compression of the tectal plate and cerebral aqueduct. Following insertion of a shunt, prominent changes in the corpus callosum became evident on CT and MRI characterised by oedema and swelling, particularly affecting the dorsal surface of the corpus callosum. This pattern of signal change, although dramatic, should not be mistaken for other pathologies. |
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| Keywords: | Brain Magnetic resonance imaging Corpus callosum Neuroradiology |
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