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Angiographic depiction of retrograde wire crossing technique. (A) Retrograde guidewire navigation in RCA with Corsair (Asahi Intec, Japan). (B) Retrograde true lumen puncture with Corsair. (C) Wire externalization with RG 3 (Asahi Intec, Japan). (D) Final result after DES implantation in LAD antegradely.
