title: Fornix injury in a patient with rotavirus encephalopathy: diffusion tensor tractography study.
abstract: Rotavirus encephalopathy (RE) is a benign afebrile seizure associated with acute gastroenteritis caused by rotavirus infection. We investigated the diffusion tensor tractography (DTT) findings of a patient with RE. The patient was a 30-month-old female that had experienced a brief, generalized convulsive seizure. On the day of admission, the patient had vomiting and experienced watery diarrhea. Her stool was positive for rotavirus antigen. At onset, the patient displayed a drowsy and delirious mental status; later, a splenial lesion of the corpus callosum was found on MRI. One week later, the patient's condition improved and the splenial lesion had disappeared by conventional MRI. Initial DTI showed decreased fractional anisotropy (FA) values of fornix, as well as of the corpus callosum. A follow-up DTT showed a restored interrupted right fonical crus and increased FA values of corpus callosum and fornix. These results highlight the implications of the probability of not only a corpus callosum injury, but a fornix injury as well, in this patient with RE.
authors.affiliation: Department of Physical Medicine and Rehabilitation, College of Medicine, Yeungnam University, Daegu 705-717, Korea.
authors.forename: Su Min
authors.initials: SM
authors.lastname: Son
authors.forename: Sung Ho
authors.initials: SH
authors.lastname: Jang
authors.forename: Eun Sil
authors.initials: ES
authors.lastname: Lee
authors.forename: Sang Ho
authors.initials: SH
authors.lastname: Ahn
authors.forename: Dong Gyu
authors.initials: DG
authors.lastname: Lee
authors.forename: Hee Kyung
authors.initials: HK
authors.lastname: Cho