Computed Tomography📍 Chest更新于 2025-12-15影像科审核
Descending Thoracic Aortic Aneurysm
了解 Chest Computed Tomography 影像中的 Descending Thoracic Aortic Aneurysm，明确其含义与下一步措施。
影像表现
Computed Tomography FindingDilated descending thoracic aorta >3.5 cm with mural thrombus or calcification; best seen on CTA.
临床意义
Risk of rupture/dissection rises with size; requires surveillance or repair.
What is a Thoracic Aortic Aneurysm?
Abnormal dilation of the aortic wall. CT angiography measures diameter and detects complications.
Imaging Appearance
- Fusiform or saccular dilation ＞3.5 cm
- Intimal calcifications displaced outward
- Mural thrombus may be present
- Evaluate for dissection flap or intramural hematoma
Clinical Significance
- Size and growth rate determine repair timing
- Blood pressure control is critical
Symptoms
- Often asymptomatic
- Possible chest/back pain or hoarseness if compressive
Diagnosis
- CTA chest for measurement and planning
- Labs: renal function prior to contrast use
Treatment
- Strict blood pressure control, smoking cessation
- Endovascular repair (TEVAR) or open surgery when indicated
Prognosis
- Good with surveillance and timely repair; rupture has high mortality
What Should You Do?
- Follow imaging surveillance intervals.
- Take antihypertensives consistently.
- Seek emergency care for sudden chest/back pain.
Medical Disclaimer: Educational only; follow vascular specialist advice.
搭配化验结果解读
当影像出现 Descending Thoracic Aortic Aneurysm 时，医生常会查看这些化验：
相关影像术语
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