Apter S, Rimon U, Konen E, Erlich Z, Guranda L, Amitai M, Portnoy O, Gayer G, Hertz M
Department of Diagnostic Imaging, Sheba Medical Center (Affiliated to Sackler School of Medicine, Tel-Aviv University), Tel-Hashomer, Israel.
Abdom Imaging. 2010 Feb;35(1):99-105. doi: 10.1007/s00261-008-9488-1. Epub 2008 Dec 10.
To assess the CT features of sealed rupture of abdominal aortic aneurysm.
We reviewed the CT scans of six index cases obtained over a 3 year period with a sealed rupture of an abdominal aortic aneurysm and those reported in the literature over a 21 year period. CT scans were reviewed for aneurysm size, the presence of a draped aorta and adjacent vertebral erosion. A group of consecutive patients with non-ruptured abdominal aortic aneurysm, referred for endovascular aneurysm repair during the same 3 year period constituted the control group.
In the study group of 31 patients the mean size of the aneurysm was 6.24 +/- 2.01 cm, compared to 6.01 +/- 0.99 cm in the control group, without statistically significant difference (t = 0.75, df = 97, P = 0.46). A draped aorta was detected in all patients with a sealed rupture. Vertebral erosion was present in all our six, but mentioned in only 14 of the cases reported.
A sealed rupture of an abdominal aortic aneurysm can occur in relatively small aneurysms. A draped aorta and adjacent vertebral erosion are characteristic CT signs of such a rupture.
评估腹主动脉瘤封闭性破裂的CT特征。
我们回顾了3年内6例腹主动脉瘤封闭性破裂患者的CT扫描结果以及21年内文献报道的此类病例的CT扫描结果。对CT扫描结果进行分析，观察动脉瘤大小、主动脉覆盖情况及相邻椎体侵蚀情况。同一3年内因腹主动脉瘤未破裂而接受血管内动脉瘤修复术的一组连续患者作为对照组。
研究组31例患者的动脉瘤平均大小为6.24±2.01cm，对照组为6.01±0.99cm，差异无统计学意义（t=0.75，自由度=97，P=0.46）。所有腹主动脉瘤封闭性破裂患者均检测到主动脉覆盖。我们的6例患者均出现椎体侵蚀，但文献报道的病例中仅14例提及。
腹主动脉瘤封闭性破裂可发生于相对较小的动脉瘤。主动脉覆盖及相邻椎体侵蚀是此类破裂的特征性CT表现。
