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The infrapyloric artery and cephalic pancreatoduodenectomy with pylorus preservation: preliminary study

L'artère infrapylorique et la duodéno-pancréatectomie céphalique avec conservation du pylore : étude préliminaire

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Summary

Cephalic pancreatoduodenectomy (CPD) with pylorus preservation has been suggested to improve the functional and nutritional result of surgery. At operation, the first two centimeters of the duodenum are preserved, the vascular arch of the lesser gastric curvature is saved and the right gastroepiploic artery is resected at its origin. The aim of this study on 15 fresh cadavers was to determine the origin of the vascularization of the remaining duodenum and also the possibilities of preserving an optimal vascularization after CPD and pylorus preservation. All of the arteries supplying the remaining duodenum and arising either from the right gastric artery or the right gastroepiploic artery were identified. The distances between the origin of the infrapyloric artery and the termination of the gastroduodenal artery on the cranial and ventral pancreaticoduodenal artery and the left gastroepiploic artery were measured. At CPD with pylorus preservation, the study demonstrated that: 1) the cranial side of the remaining duodenum remains vascularized in 80% of the cases by one or two supraduodenal branches coming from the right gastric artery; 2) ligation of the right gastroepiploic artery eliminates all vascular supply to the caudal side of the remaining duodenum in almost half of the cases; 3) in these cases, the dissection of the bifurcation of the gastroduodenal artery and the vascular section beyond the origin of the infrapyloric artery allowed a direct vascular supply to the remaining duodenum to be preserved.

Résumé

La duodéno-pancréatectomie céphalique (DPC) avec conservation du pylore a été proposée dans le but d'améliorer le résultat fonctionnel et nutritionnel. Lors de cette intervention, les deux premiers centimètres du duodénum sont conservés, l'arcade vasculaire de la petite courbure de l'estomac est respectée et l'a. gastro-épiploïque droite est sectionnée à son origine. Le but de ce travail, portant sur 15 sujets frais, était de déterminer l'origine de la vascularisation du duodénum restant ainsi que les possibilités de lui conserver une vascularisation optimale après DPC avec conservation pylorique. Toutes les artères destinées au duodénum restant et prenant naissance soit de l'a. gastrique droite soit de l'a. gastro-épiploïque droite ont été identifiées. Les distances entre l'origine de l'a. infra-pylorique et la terminaison de l'a. gastro-duodénale en a. pancrético-duodénale crâniale et ventrale et a. gastro-épiploïque droite ont été mesurées. Ce travail a montré que lors d'une DPC avec conservation du pylore: 1) la face crâniale du duodénum restant reste vascularisé dans 80 % des cas par 1 ou 2 rameaux supra-duodénaux venant de l'a. gastrique droite; 2) la ligature à l'origine de l'a. gastro-épiploïque droite supprime tout apport artériel à la face caudale du duodénum restant dans presque la moitié des cas; 3) dans ces cas, la dissection de la bifurcation de l'a. gastro-duodénale et la section vasculaire au delà de la naissance de l'a. infra-pylorique permettraient de conserver un apport artériel direct au duodénum restant.

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Wind, P., Chevallier, J., Sarcy, J. et al. The infrapyloric artery and cephalic pancreatoduodenectomy with pylorus preservation: preliminary study. Surg Radiol Anat 16, 165–172 (1994). https://doi.org/10.1007/BF01627590

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