Approximately 9% -13% of patients with AAA are diagnosed with malignant tumors of abdominal cavity, and the number of patients with a combination of these diseases has increased over the past decades [3, 4, 5]. In 1967, for the first time, Szylagyi D. et al. published a series of observations of patients with aneurysm of the abdominal aorta and malignant tumors of the abdominal cavity [6]. A year later, in 1968, for the first time, Sigler L. et al. performed a successful simultaneous operation on a 73-year-old patient with aneurysm of the abdominal aorta and intraoperative cancer of the gastric antrum [7]. At the first stage the resection of the aneurysm with bifurcation prosthetics of the infrarenal aorta was performed, followed by distal subtotal resection of the stomach at the second stage.
Since the second half of the 20th century, no more than 30 observations of simultaneous operations for abdominal aortic aneurysm and gastric cancer have been described in the world literature [8]. Over the past 10 years, we have only managed to find a few descriptions of the simultaneous performance of gastrectomy for GC and aortic prosthetics for aneurysm, while in the vast majority of cases, the placement of an aortic stent graft has been carried out endovascularly [9, 10].
Despite the fact that both diseases have a very high risk of developing fatal complications, such as bleeding or rupture of an aortic aneurysm, there is no single surgical tactic in the treatment of these patients [3].
Аccording to Perko et al., cumulative 5-year survival of patients with AAA makes up no more than 15%, while the most common cause of death is aneurysm rupture. Based on this, patients with AAA with a diameter of more than 6 cm are recommended surgical treatment in the shortest time from the moment of its detection [11]. The question of simultaneous operation on the aorta and on the stomach, as well as the choice of endovascular or open vascular prosthetics remains open. A number of authors tend to the stage or simultaneous treatment with endoluminal aortic prosthetics, especially in patients with severe concomitant diseases, explaining this as a minimal risk of infection of the prosthesis [9]. However, there are strong arguments in favor of simultaneous traditional interventions. So, Swanson et al. reported 10 asymptomatic AAA, the rupture of which occurred within 36 days after the primary laparotomy, and according to these authors, was the result of collagen lysis induced by laparotomy, nutritional deficiency and local inflammation, which could have weakened the aortic wall [12, 13]. When choosing a surgical access, there is an opinion that it is advisable to perform gastrectomy through midline laparotomy, while aortic prosthetics is recommended to perform using retroperitoneal access, in order to reduce the risk of aortic graft contamination [14].
From our point of view, the simultaneous intervention for AAA and gastric cancer is justified for a number of reasons. The use of the midline laparotomic access provides an adequate and ergonomic workspace for revision, both during the surgery on the stomach and the aorta [15]. In compliance with generally accepted rules of asepsis and antiseptics, the risk of infection of the vascular prosthesis is minimized. From our point of view, endovascular prosthetics is justified only in severe somatic patients. When performing simultaneous intervention (i.e. traditional on the stomach and intravascular on the aorta), requiring additional x-ray equipment in the operating room, the duration of intraoperative anesthesia increases due to the endovascular stage, which can lead to a number of respiratory and neurological complications in the early postoperative period. Taking into consideration the economic component, traditional vascular prostheses are much cheaper than their endovascular analogues, with similar efficiency. Thus, their use is more economically advantageous in case of simultaneous operations.
In case of simultaneous surgery, the question arises: which stage to perform first: vascular or oncological? Our Japanese colleagues believe that it is necessary to perform aortic prosthetics first, which is a clean stage, and after suturing the parietal peritoneum, go to surgery on the stomach [16]. In our observation, the operation began with gastrectomy, since the removal of the stomach as a single unit with a large omentum allowed to free up a significant space in the abdominal cavity, thereby providing convenient access to the aneurysm of the infrarenal aorta and greater freedom of manipulation. After the completion, the abdominal cavity was lavaged with antiseptic solutions, which was a prevention of bacterial contamination of the aortic graft and allowed safe operation on the aorta.
Currently, combined treatment is used for locally advanced forms of stomach cancer, including the surgical stage and a course of chemotherapy. Aortic aneurysm with thrombosis, as well as peripheral vascular thrombosis with aortic aneurysm in some cases, are a contraindication to chemotherapy for cancer patients. Performing a simultaneous operation allowed the patient to undergo rehabilitation after the treatment of two diseases during one hospitalization and, in the shortest possible time, to proceed to the next stage of gastric cancer treatment - chemotherapy, thereby improving the prognosis of life expectancy.
Thus, traditional simultaneous operations for gastric cancer and aortic aneurysms are technically feasible. Moreover, they have several advantages over stage treatment, such as rehabilitation for two diseases during one hospitalization, economic efficiency due to the lower cost of a traditional aortic prosthesis and the possibility of early chemotherapy for gastric oncology. However, these operations should be carried out in highly specialized medical centers, where surgeons have sufficient experience in both oncological and cardiovascular surgery.