Fig. 1From: Retropharyngeal hematoma in the context of obstructive sleep apnea: a case report and review of the literatureMagnetic resonance imaging of retropharyngeal hematoma. a A lesion with rim enhancement (arrow) is displayed on a T1-weighted coronal image. b Diffusion restriction can be found at the margins of the lesion (arrow). c and d T1-weighted fat suppressed and T2-weighted images accordingly show a lesion with a central core, surrounded by an enhancing rim. The intermediate hyperintense signal on T2-weighted (arrow) image indicates hematomaBack to article page