CA resection for advanced pancreatic body cancer was an exceptional situation of arterial resection, wherein reconstruction of the hepatic artery was considered to be unnecessary because of the peripancreatic collateral arterial flow that originated from the SMA
[31]. Pancreatic body cancers frequently involve the celiac–hepatic artery system, and distal pancreatectomy with celiac axis resection (DP-CAR) was a reasonable choice to achieve an en-bloc eradication of the tumor and its invasion. The concept of DP-CAR was a modification of the Appleby procedure originally for advanced gastric cancers
[31]. The first report about DP-CAR was written by Hishinuma et al. in 1991, and they documented the preservation of the whole stomach during CAR and distinguished DP-CAR from the Appleby procedure in that the stomach was preserved
[32]. Afterward, several small series of DP-CARs were reported
[33][34][35][36][37], and in 2007, Hirano et al. first described the short- and long-term outcomes of the standardized DP-CAR
[38]. They reported 23 patients who underwent DP-CARs with no mortality and had acceptable overall survival (five-year survival rate, 42% and median survival time, 21 months). This pivotal report encouraged pancreatic surgeons worldwide to perform DP-CAR as a promising option to balance surgical and oncological safety. However, as the cases accumulated, ischemic complications involving the stomach or liver became prominent, as well as post-pancreatectomy hemorrhage, caused by the insufficient drainage of postoperative pancreatic fistula, leading to non-negligible mortality
[39][40][41][42][43][44] (). Ischemic gastropathy or stomach perforation were complications specific to DP-CARs, which often included resection of the LGA, as well as the left gastroepiploic artery. Moreover, radical retroperitoneal dissection during DP-CAR includes resection of the left inferior phrenic artery. These sacrifices of critical gastric inflows potentially lead to life-threatening gastropathy
[45]. As for liver infarction, collateral hepatic flow via the GDA was theoretically sufficient for liver perfusion. However, excessive dissection of the GDA sometimes leads to arterial stenosis, which causes depression of the hepatic arterial flow
[46]. Depression of the proper hepatic artery induces recurrent cholangitis, liver abscess or cholecystitis. Cholecystitis was reported to be one possible cause of postoperative major intervention
[40][45]. Therefore, the gallbladder should be resected routinely during DP-CAR. In the early years, preoperative arterial embolization of the HA or LGA to enhance the collateral flow was encouraged to avoid ischemic complications. However, recent reports found no positive impact of arterial embolization on the prevention of postoperative ischemic complications
[45][46][47][48]. Another possible resolution is an intraoperative reconstruction of the LGA. Sato et al. first described reconstruction of the LGA to avoid ischemic gastropathy after DP-CAR
[49]. The authors used a pedicle of the middle colic artery as an origin of the arterial supply. The right branch of the middle colic artery is usually away from the pancreatic body cancer and used as a suitable counterpart of the LGA. The efficacy of the anastomosis should be confirmed promptly and objectively after anastomosis. Oba et al. reported the intraoperative evaluation of the patency of LGA anastomosis using indocyanine green fluorescence imaging
[50]. By these managements, the safety of DP-CARs would be improved.