Clinical imaging
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We present a case of paradoxical air embolism (PAE) in the distal right coronary artery identified by coronary CT angiography. The underlying cause of PAE in the distal right coronary artery was a patent foramen ovale because the typical CT findings of a patent foramen ovale (i.e., combination of findings of the presence of a slit-like contrast column in the interatrial septum and a contrast jet through the septum) were identified by coronary CT angiography.
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Solitary vertebral chordoma presents as an intra- and extraosseous tumour with typical bright signal on T2-weighted images and moderate inhomogeneous enhancement on T1 postcontrast images. The diffusion weighted imaging (DWI) characteristics of this histologically proven third lumbar vertebra chordoma are reported for the first time. The DWI hyperintensity with increased apparent diffusion coefficient (ADC) values strongly supports the preoperative diagnosis of a vertebral chordoma, allows for careful preoperative planning of the surgical procedure, and helps to narrow the differential diagnosis.