eISSN: 2299-0054
ISSN: 1895-4588
Videosurgery and Other Miniinvasive Techniques
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3/2018
vol. 13
 
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abstract:
Original paper

Neovascularization after ischemic conditioning of the stomach and the influence of follow-up neoadjuvant chemotherapy thereon

Vadim Prudius, Vladimír Procházka, Zdeněk Pavlovský, Adam Peštál, Petr Vlček, Ivan Čapov, Lenka Veverková, Michal Reška

Videosurgery Miniinv 2018; 13 (3): 299–305
Online publish date: 2018/05/22
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Introduction
Esophagectomy and reconstruction remain the optimal treatment for patients with resectable esophageal cancer. Neovascularization after ischemic conditioning of the stomach before esophagectomy is a laparoscopic procedure which may potentially reduce gastric conduit ischemia.

Aim
To investigate the influence of ischemic conditioning on neovascularization along the greater curvature of the stomach and to explore the effect of neoadjuvant chemotherapy on neovascularization after ischemic conditioning.

Material and methods
Staging laparoscopy was performed before the main resection procedure; during this procedure ischemic conditioning was performed. Samples taken from the human stomach were divided into 3 groups: group A – patients after ischemic conditioning with a delay of 30–45 days after left gastric artery (LGA) ligation (n = 4); group B – patients who were undergoing neoadjuvant chemotherapy with a delay of 90–140 days after left gastric artery ligation (n = 4); and control group C – patients without ischemic conditioning (n = 7).

Results
After ischemic conditioning with a delay of 30–45 days, the count of neovessels along the greater curvature of the stomach increased from 5.4 ±0.7 in the control group to 17.5 ±0.9 in a low-power field of view (LPF) in group A and increased still further on average to 19.8 ±10.4 in group B.

Conclusions
Left gastric artery ligation only is a sufficient procedure for ischemic conditioning of the stomach. Neovascularization along the greater curvature is a continuous process that depends on delay time. Neoadjuvant therapy has no influence on the effect of neovascularization.

keywords:

esophageal cancer, neovascularization, esophageal surgery, gastric conduit, ischemic conditioning

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