Question 1Is it necessary to distinguish between congenital medial capillary macula and lateral congenital capillary macula? Recommendation of good clinical practice, based on the experience of the panel: GGP grade. It is no supported by EtiologyMost VM are sporadic. However, inherited forms with autosomal dominant inheritance have been reported.

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We report a case of a celiac trunk stenting using a steerable guiding catheter, to fix a residual endoleak following fenestrated endovascular repair (FEVAR) of a thoracoabdominal aortic aneurysm (TAAA). A systematic search of the literature about the use of steerable catheters was also performed on Pubmed according to the PRISMA Guidelines, including all papers in which the device was used for in vivo endovascular procedures.In our case report, the patient had undergone a failed attempt of cannulation due to the presence of a severely angulated and stenosed ostium of the vessel. A steerable catheter was then used to fix the residual endoleak. The search of the Literature retrieved 544 papers. Of them, 13 met the inclusion criteria and were therefore assessed. The use of steerable sheaths and catheters was reported as effective and safe for the cannulation of 157 target vessels in 131 endovascular procedures, with a success rate of 95.5% and no complications. The use of a steerable guiding catheter in our experience was safe and effective for the selective cannulation of a severely stenosed and angulated celiac trunk, to correct a residual endoleak after FEVAR for TAAA. Steerable catheters could be useful tools for the selective cannulation of target vessels with a challenging ostium. K E Y W O R D Scatheter design, endovascular intervention, surgery, endovascular

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