PMC9888589_01
Brain magnetic resonance imaging. MRI revealing a median pontine rounded lesion (yellow arrows) without mass effects, with slight T1 signal attenuation (A - axial T1; B - sagital T1), T2 hypersignal (C - axial T2; D - sagital T2; F - coronal T2) and hyperintensity on fluid-attenuated inversion recovery (FLAIR) imaging (E - axial FLAIR) suggestive of late subacute ischemic etiology.
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FIG1
A post-IVT brain CT scan at 24 hours ruled out signs of procedure-related complications or signs of an established infarction. A few days later, the patient underwent MRI (Figure 1), which revealed a median pontine rounded lesion without mass effects, with slight T1 signal attenuation and hypersignal on long TR sequences, and with slight restriction of proton diffusion, suggesting a possible late subacute ischemic etiology.
Transoesophageal echocardiography. 2D transoesophageal echocardiography image (A) of a patent foramen ovale (yellow arrows), with evident shunting on the color flow doppler (B). RA: right atrium; LA: left atrium.
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FIG2
Transoesophageal echocardiography (Figure 2) revealed a patent foramen ovale with major thrombotic risk.