CTICasesParatracheal Hematoma (Post-Aortic Stent Placement)
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Imaging findings
A post-operative chest radiograph following aortic stent placement for coarctation revealed a thicker, more lucent right paratracheal stripe compared to the preoperative study, with increased soft tissue between the trachea and aorta. A preoperative CT showed a tight aortic coarctation but notably lacked substantial collateral vessels (like internal mammary arteries), possibly related to the patient's developmental delay and low demand for lower extremity perfusion. A subsequent CT confirmed a subtle paratracheal hematoma along the right paratracheal region, posterior to the esophagus, with some hemorrhage along the descending aorta.
Key takeaways
Subtle radiographic findings, such as thickening or altered lucency of the paratracheal stripe, can be an early indicator of mediastinal hemorrhage following thoracic interventions. Aortic dilation and stent placement, particularly for coarctation, can lead to small vessel bleeds. The clinical context, including a patient's activity level, can influence the development of collateral circulation in coarctation.
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