Diffuse Signal Changes in Corpus Callosum after Decompression Surgery of Hydrocephalus

Wide spread MR signal changes in the corpus callosum can occur after shunt operation in patients with hydrocephalus. Although the mechanism of these signal changes remains unclear, neural compression caused by active hydrocephalus and changes of conditions after shunt operation may contribute to the development of these changes. We present a patient who underwent successful ventriculo-peritoneal shunt operation for hydrocephalus and had diffuse sig - nal changes in the corpus callosum in MR images taken 2 years after the surgery.