Fig. 1
From: Bilateral facial colliculus syndrome caused by pontine tegmentum infarction: a case report
a Diffusion-weighted image 1 day after disease onset revealed increased restricted diffusion signal in the right middle cerebellar peduncle (arrowhead) and bilateral dorsal pontine tegmentum (thin arrows), the latter of which was consistent with the involvement of facial colliculus. The lesions showed correspondent hyposignal on attenuated diffusion coefficient map. b CT angiography of head and neck did not show obvious stenosis in the anterior and posterior circulation. c Right-to-left mircobubbles (thick arrow) were observed on contrast-enhanced transoesophageal echocardiography during Valsalva maneuver. d Follow-up MRI at 6 month showed hypointenstiy in the corresponding region on T1 weighted image, indicating old infarction