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The retro-oesophageal right subclavian a. is a classical variant. We report the first case recognised in the embryo (11 mm subject reconstructed by Born's method). Four other adult cases are analysed (1 dissection and 3 clinical cases) and compared with 250 clinical observations of the supraaortic trunks. In the modal state it arises from the 7th arterial segment. The origin of the subclavian and vertebral aa. and the arrangement of the supraaortic trunks allow the distinction of three types, whose embryologic origin is discussed.

database combined with a systematic review of the literature of the patients presenting a retrograde dissection of the ascending aorta. A univariate analysis and a binary logistic regression were carried out to identify the risk factors. Results: In the MOTHER database, a retrograde dissection was observed in 1.6% of the patients (N: 16/1010). The binary logistic regression showed that the implantation of a stentgraft for an aortic dissection (p¼0.000212 acute; p¼0.006 chronic) and the oversizing of the stentgraft (Relative Risk 1.14 per 1% of increase in oversizing from 9%, p <0.0001) were significantly more frequent in patients presenting a retrograde dissection. The data of the patients identified at the time of the systematic review of the literature were shared with the data of the MOTHER register. This combination made it possible to report that the incidence of retrograde dissections was 1.7% (168/9894). The majority of the retrograde dissections occur in the immediate postoperative period (58%) and these dissections are associated with a high mortality rate (33.6%). The relative risk of occurrence of a retrograde dissection after implantation of a stentgraft for an acute aortic dissection was 10.0 (IC: 4.7 to 21.9) and 3.4 (IC: 1.3-8.8) in the event of chronic aortic dissection. The risk of occurrence of a retrograde dissection was not significantly different according to the proximal configuration of the stentgraft: with a bare proximal stent (2.8%) vs. without a bare proximal stent (1.9%) (p ¼ 0.1298). Conclusion: Although the risk of retrograde dissection is low after endovascular treatment of the thoracic aorta, this complication is associated a high death rate. The occurrence of a retrograde dissection is significantly higher in patients treated for a type B aortic dissection especially in the acute phase and is correlated with the importance of the oversizing of the stentgraft. The proximal configuration of the stentgraft is not a risk factor of retrograde dissection.Objectives: Renal transplantation is the treatment of choice of end stage kidney disease. However, vascular surgical complications can compromise the transplants and the vital prognosis of the transplanted patients. The aim of the study was to evaluate this type of complications after renal transplantation. Materials and Methods: We retrospectively reviewed all the files of the patients transplanted between January 2008 and December 2014 in the same university center. We collected the demographic data and the follow-up of the patients that presented a vascular surgical complication in relation to their transplant. We distinguished the minor or major vascular complications having or not for consequence the loss of the transplant. Results: During this period, 309 renal transplantations were carried out (203 men) with a mean age of 51.1 ± 16.4 years. Thirty-seven patients (12%) presented a vascular complication. Seven (2.3%) major complications were found. Five (1.6%) required transplantectomy because of four (1.3%) arterial thromboses and...

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