Preoperative Diagnostic Angiogram and Endovascular Aortic Stent Placement for Appleby Resection Candidates: A Novel Surgical Technique in the Management of Locally Advanced Pancreatic Cancer

Hemodynamic, Surgical and Oncological Outcomes of 40 Distal Pancreatectomies with Celiac and Left Gastric Arteries Resection (DP CAR) without Arterial Reconstructions and Preoperative Embolization

DPCAR’s short- and long-term outcomes are highly diverse, while the causes and prevention of ischemic complications are unclear. To assess oncological, surgical, and hemodynamic outcomes of 40 consecutive DPCARs for pancreatic (n37) and gastric tumors (n3) (2009−2021), retrospective analyses of mortality, morbidity, survival, and hemodynamic consequences after DPCAR were undertaken using case history data, IOUS, and pre- and postoperative CT measurements. In postoperative complications (42.5%), the pancreatic fistula was the most frequent event (27%), 90-day mortality was 7.5. With 27 months median follow-up, median overall (OS) and progression-free survival (PFS) for PDAC were 29 and 18 months, respectively; with 1-, 3-, and 5-years, the OS were 90, 60, and 28%, with an R0-resection rate of 92.5%. Liver and gastric ischemia developed in 0 and 5 (12.5%) cases. Comparison of clinical and vascular geometry data revealed fast adaptation of collateral circulation, insignificant changes in proper hepatic artery diameter, and high risk of ischemic gastropathy if the preoperative diameter of pancreaticoduodenal artery was <2 mm. DP CAR can be performed with acceptable morbidity and survival. OS and RFS in this super-selective cohort were compared to those for resectable cancer. The changes in the postoperative arterial geometry could explain the causes of ischemic complications and determine directions for their prevention.

[Distal pancreatectomy with resection of the celiac trunk, right or left hepatic artery without arterial reconstruction (extended DP-CAR)]

OBJECTIVE

To evaluate safety and postoperative outcomes of DP-CAR with resection of one of the lobar hepatic arteries without arterial reconstruction (extended DP-CAR).

MATERIAL AND METHODS

Perioperative data and survival after 7 extended DP-CARs R0 were retrospectively analyzed. Arterial blood flow in the liver was assessed using intraoperative ultrasound and postoperative CT angiography.

RESULTS

Among 40 DP-CARs, resection of left or right hepatic artery was performed in 7 cases of aberrant anatomy including 1 case of portal vein resection. Mortality and ischemic complications were not observed. The main source of blood supply to the «devascularized» liver lobe was interlobar communicating artery or the arcade of the lesser curvature of the stomach. Incidence of pancreatic fistula was 44%, mean blood loss - 230 (100-650) ml, surgery time - 259 (195-310) min, mean hospital-stay - 14 (9-26) days. Median survival of patients with pancreatic ductal adenocarcinoma was 25 months after combined treatment. Three patients died after 26, 28 and 77 months. Other patients are alive without progression for 109, 24, 23 and 12 months after therapy onset.

CONCLUSION

Extended DP-CAR is advisable and safe procedure if reliable intraoperative control of liver and stomach blood supply is ensured.