CTICasesIntramural Blood Pools in Aortic Intramural Hematoma
Imaging findings
Serial CT angiography in a patient with aortic intramural hematoma (IMH) demonstrates the development and subsequent healing of multiple, small, contrast-filled out-pouchings within the thickened aortic wall, corresponding to intramural blood pools communicating with intercostal/bronchial arteries.
Key takeaways
Intramural blood pools (ILBs) are localized areas of contrast enhancement within an IMH. They typically represent communications with aortic branch vessels (e.g., intercostal or bronchial arteries) rather than entry tears. Unlike ulcer-like projections, ILBs are often benign and frequently show spontaneous resolution or stability.
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