PMC9062449_01
(A) Computed tomography after initial ascending aortic replacement and omentopexy. No contrast enhancement in the side branch. (B) There was no pseudoaneurysm formation in the side branch one year previously. (C) Pre-operative three dimensional computed tomography image showing the pseudoaneurysm arising from the side branch (black arrow). (D) Axial image of the pseudoaneurysm (white arrow). (E) Post-operative computed tomography image. (F) There was no endoleak on axial imaging.
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fig1
A 79 year old man had a history of ascending aortic replacement and omentopexy for tuberculous ascending aortic aneurysm rupture when he was 66 years old (Fig. 1A). Enhanced CT revealed a pseudoaneurysm arising from the side branch stump of the prosthesis (Fig. 1C and D). Plain CT performed one year earlier showed no pseudoaneurysm formation (Fig. 1B). A post-operative CT scan confirmed complete exclusion of the pseudoaneurysm (Fig. 1E and F).
PMC9062449_02
(A) No contrast into the side branch after initial surgery. (B) There was no enlargement of the side branch or pseudoaneurysm formation one year previously. (C) Pre-operative computed tomography image showing the pseudoaneurysm (arrow). (D) Presence of contrast into the pseudoaneurysm (white arrow). (E) Post-operative computed tomography image showing stent graft inserted into the ascending aorta. (F) No endoleak seen on axial imaging.
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fig2
A acute aortic dissection 11 years ago (Fig. 2A). A pseudoaneurysm was recognised on CT scan during routine follow up examination. As in Case 1, enhanced CT findings showed a pseudoaneurysm arising from the side branch stump of the prosthesis (Fig. 2C and D). As in Case 1, plain CT performed one year earlier showed no pseudoaneurysm formation (Fig. 2B). A post-operative CT scan confirmed complete exclusion of the pseudoaneurysm (Fig. 2).