Introduction: The geniculate bodies are a particular region topographically of central nervous system which are vascular the anterior and posterior choroidal artery. By this characteristic are rare vascular lesions that lead to an injury in this region. We report a case of a child who presents with this peculiar injury after a frame of diarrhea.

Case description: A 10 years girl presented with acute blindness one day after a moderate episode of febrile diarrhea. Examination showed no signs of dehydration, normal pupillary response to light but complete bilateral amaurosis. Supplementary exams included electrolytes, were normal. MRI revealed within the lateral geniculate bodies areas of symmetric bilateral decreased signal intensity on T1-weighted imaging with correspondent hyper-signal-intensity on T2-weighted images. These areas were consistent with acute infarcts that became slightly hemorrhagic.

Conclusion: Due the lateral geniculate bodies be in watershed topography, they are susceptible to injury by hypoperfusion leading to an infarct before the effectiveness of the anastomotic network.