Fujiwara, Yoshiyuki

Fukumoto, Yoji

Kono, Yusuke

Kuroda, Hirohiko

Matsunaga, Tomoyuki

Murakami, Yuki

Osaki, Tomohiro

Saito, Hiroaki

Shimizu, Shota

Tottori University Research Result Repository

56Yonago Acta Medica 2017;60:56–58 Patient ReportCorresponding author: Hiroaki Saito, MD, PhDsai10@med.tottori-u.ac.jpReceived 2016 November 11Accepted 2016 December 14Abbreviations: CA19-9, carbohydrate antigen 19-9; CEA, carci-noembryonic antigen; GEAA, gastroepiploic arterial aneurysm; GDA, gastroduodenal artery; PDA, pancreaticoduodenal artery; SAA, splanchnic artery aneurysm; SMA, superior mesenteric ar-teryA  Case of Unruptured Right Gastroepiploic Artery Aneurysm Successfully  Resected by Laparoscopic SurgeryYuki Murakami, Hiroaki Saito, Shota Shimizu, Yusuke Kono, Hirohiko Kuroda, Tomoyuki Matsunaga, Yoji Fukumoto, Tomohiro Osaki and Yoshiyuki FujiwaraDivision of Surgical Oncology, Department of Surgery, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8503, JapanABSTRACTA 50-year-old woman was admitted to our hospital to undergo surgery to remove a pituitary adenoma. Preop-erative dynamic computed tomography revealed an in-cidental right gastroepiploic arterial aneurysm (GEAA). After removal of the pituitary adenoma, we performed a laparoscopic right gastroepiploic aneurysmectomy. The postoperative course was uneventful. Right GEAAs should be treated at diagnosis owing to the high possi-bility of rupture. Laparoscopic right gastroepiploic aneu-rysmectomy is feasible and should be considered for the treatment of right GEAAs.Key words    Abdominal visceral artery aneurysm; Gas-troepiploic artery aneurysm; Laparoscopic surgeryAbdominal visceral artery aneurysms are relatively rare, especially gastroepiploic arterial aneurysms (GEAAs).1 The risk of rupture of GEAAs is high and most GEAAs are identifi ed after rupture or as a result of secondary complications. GEAA rupture is associated with a high mortality rate.2 Here, we report a rare case of a right GEAA that was diagnosed preoperatively without any complications and was treated successfully with laparo-scopic surgery. PATIENT REPORTA 50-year-old woman was admitted to our hospital to undergo surgery to treat a pituitary adenoma. On phys-ical examination, she showed an acromegaly-like facial appearance. She had never smoked or consumed alcohol. She had mild hypertension that did not require medica-tion. Blood tests revealed elevated growth hormone (25.8 ng/mL) and insulin-like growth factor-1 (853 ng/mL) levels, possibly due to overproduction by the pituitary adenoma. The tumor markers carcinoembryonic antigen (CEA) and carbohydrate antigen 19-9 (CA19-9) were both within normal limits. Preoperative dynamic com-puted tomography revealed an incidental right GEAA (Fig. 1).  The right GEAA was located in the proximal right gastroepiploic artery and was 23 mm in diameter. Sur-gery was performed to remove the pituitary adenoma. Sixty days after this operation, the patient was referred to our department for treatment of the right GEAA. Because the aneurysm was not near the root of the right gastroepiploic artery, we considered it possible to ligate the GEAA proximally and distally, and excise it. This right gastroepiploic aneurysmectomy was performed laparoscopically. Under general anesthesia, the patient was placed in the supine position with open spread. After the pneumoperitoneum was established using the open technique at the umbilicus, a ﬂ exible electrolaparo-scope was introduced through the umbilical port. Four additional ports were placed in the upper abdominal area (three 5-mm ports under the bilateral rib bow and the right side of the umbilicus and a 12-mm port at the left side of the umbilicus). The abdomen was insufﬂ ated with carbon dioxide to 8 mmHg. During laparoscopic exploration, a 2-cm spherical mass was seen at the right side of the greater omentum (Fig. 2).   After detaching the greater omentum using laparo-scopic coagulation shears (LCS, Ethicon Endosurgery, Cincinnati, OH), the right gastroepiploic artery was ex-posed proximal and distal to the GEAA and clipped (Fig. 3).  The GEAA was then excised and removed through the umbilical trocar incision. The aneurysm was 2.2 × 1.9 × 1.8 cm (Fig. 4).  Intraoperative blood loss was minimal and the op-eration took 101 min. Staining with Elastica van Gieson confi rmed that the tunica media were present, although disrupted. Thus, the fi nal diagnosis was a pseudoaneu-rysm. The postoperative course was uneventful, and the patient was discharged on day 6. 57Laparoscopic surgery of right GEAAsDISCUSSIONAbdominal visceral artery aneurysms are a relatively rare vascular disease. Stanley et al. reported the ab-dominal viscera aneurysms of 1,118 patients, including splenic aneurysms (656 patients, 58.7%), hepatic artery aneurysms (227 patients, 20.3%), superior mesenteric artery (SMA) aneurysms (89 patients, 8.0%), and gastric and gastroepiploic artery aneurysms (53 patients, 4.9%).1 Abdominal visceral artery aneurysm has been associat-ed with arteriosclerosis, congenital vascular abnormal-ities, infection, trauma, inﬂ ammation, vasculitis due to collagen disease, and segmental arterial mediolysis. Because rupture of abdominal visceral artery aneu-rysms is associated with a high mortality rate, the timing Murakami et al. Figure 1	 Murakami et al. Figure 2	Murakami et al. Figure 3	Murakami et al. Figure 4	Fig. 1. 3D computed tomography angiography shows the 17-mm aneurysm in the right gastroepiploic artery.Fig. 2. Operative fi ndings revealed a 2-cm round mass (arrow) at the right side of the greater omentum.Fig. 3. The right gastroepiploic artery was clipped and divided at the proximal site of the right gastroepiploic arterial aneurysm.Fig. 4. Surgical specimen shows an aneurysm of 2.2 × 1.9 × 1.8 cm. of treatment is extremely important. Despite this, there is no consensus regarding the optimal timing for treat-ing right GEAAs. Corey et al. previously determined the natural history of 138 splanchnic artery aneurysms and concluded that small splanchnic artery aneurysms (SAAs) (25 mm or less) in major arteries, such as the celiac artery, splenic artery, and common hepatic artery, are not prone to signifi cant expansion and do not require frequent surveillance imaging.2 Conversely, gastro-duodenal aneurysms and aneurysms of the pancreati-coduodenal seem to behave in a different manner. It is important to recognize that these aneurysms differ from other types of SAAs in their potential for growth and rupture. It has been reported that size was not predictive 58Y. Murakami et al.of rupture and that these aneurysms were strongly asso-ciated with rupture on univariate analysis.2 Ducasse et al. also reported that most ruptured pancreaticoduodenal arteries (PDAs) are < 10 mm.3 Because the right GEAA is a branch of the gastroduodenal artery (GDA), it seems necessary to treat at diagnosis, regardless of aneurysm size.  There are endovascular therapy and surgical therapy options for the treatment of abdominal visceral artery aneurysms. Endovascular therapies include coil emboli-zation and stent graft exclusion, and are effective for the treatment of PDAs and GDAs. It has been reported that more than 90% of patients with either PDAs or GDAs were successfully managed by endovascular therapies, with complete obliteration of the aneurysm sacs on fol-low-up imaging 30 days after the procedure.2 Therefore, endovascular therapy is a considerable treatment option for right GEAAs. However, complications sometimes occur after an endovascular repair, including distal thromboembolic events, non-target vessel embolization, coil migration, end-organ infarction, and intra-proce-dural aneurysm rupture.4–6 Splenic atrophy or infarct has been reported in 20%–40% of cases following en-dovascular treatment of distal or hilar splenic artery an-eurysms.7 Furthermore, embolization of the splanchnic vessels is difficult because the anatomy is so variable. Therefore, endovascular therapy should be performed by an experienced radiologist.  Surgical resection of the aneurysm is another option for the treatment of right GEAAs. When possible, the aneurysm should be ligated proximally and distally, and excised. Unlike other abdominal visceral artery aneu-rysms, the gastroepiploic artery can be divided without any functional disorder. Furthermore, recent advances in laparoscopic surgery make it a viable technique for the treatment of abdominal visceral artery aneurysms. There are accumulating reports showing the successful laparoscopic treatment of splenic artery aneurysms, which is the most common abdominal visceral artery aneurysm.8–11 On the other hand, to the best of our knowledge, only three cases (including our case) of suc-cessful laparoscopic right gastroepiploic aneurysmec-tomy have been reported.12, 13 Laparoscopic procedures are not complicated for the treatment of GEAAs and are less invasive compared with open surgery. Further-more, aneurysmectomy is more effective treatment than endovascular therapy.6 Therefore, laparoscopic right gastroepiploic aneurysmectomy was performed for the treatment of GEAAs in the current case.  In conclusion, right GEAAs should be treated at diagnosis owing to the high possibility of rupture and associated high mortality rate. Laparoscopic right gas-troepiploic aneurysmectomy is feasible and should be considered for the treatment of right GEAAs.The authors declare no conflict of interest.REFERENCES  1 Stanley JC. Clinical importance and management of splanch-nic artery aneurysms J Vasc Surg. 1986;3:836-40.  2 Corey MR, Ergul EA, Cambria RP, English SJ, Patel VI, Lancaster RT, et al. The natural history of splanchnic artery aneurysms and outcomes after operative intervention. J Vasc Surg. 2016;63:949-57.  3 Ducasse E, Roy F, Chevalier J, Massouille D, Smith M, Speziale F, et al. Aneurysm of the pancreaticoduodenal arter-ies with a celiac trunk lesion: current management. Journal of vascular surgery. 2004;39:906-11.  4 Melissano G, Chiesa R. Successful surgical treatment of visceral artery aneurysms. After failure of percutaneous treat-ment. Tex Heart Inst J. 1998;25:75-8.  5 Pilleul F, Dugougeat F. Transcatheter embolization of splanch-nic aneurysms/pseudoaneurysms: early imaging allows detection of incomplete procedure. J Comput Assist Tomogr. 2002;26:107-12.  6 Cordova AC, Sumpio BE. Visceral Artery Aneurysms and Pseudoaneurysms—Should They All be Managed by Endo-vascular Techniques? Ann Vasc Dis. 2013;6:687-93.  7 Etezadi V, Gandhi RT, Benenati JF, Rochon P, Gordon M, Benenati MJ, et al. Endovascular treatment of visceral and re-nal artery aneurysms. J Vasc Interv Radiol. 2011;22:1246-53.  8 Wei YH, Xu JW, Shen HP, Zhang GL, Ajoodhea H, Zhang RC, et al. Laparoscopic ligation of proximal splenic artery aneurysm with splenic function preservation. World journal of gastroenterology. 2014;20:4835-8.  9 Iida A, Katayama K, Yamaguchi A. Laparoscopic resection for splenic artery aneurysm using the lateral approach: report of two cases. Asian journal of endoscopic surgery. 2013;6:147-50.10 Samame J, Kaul A, Garza U, Echeverria A, Galvani C. Lap-aroscopic aneurysm resection and splenectomy for splenic artery aneurysm in the third trimester of pregnancy. Surgical endoscopy. 2013;27:2988-91.11 Pietrabissa A, Ferrari M, Berchiolli R, Morelli L, Pugliese L, Ferrari V, et al. Laparoscopic treatment of splenic artery aneu-rysms. Journal of vascular surgery. 2009;50:275-279.12 Yamabuki T, Kojima T, Shimizu T, Kitashiro S, Konishi K, Katoh T, et al. Successful laparoscopic right gastroepiploic an-eurysmectomy: report of a case. Surg Today. 2003;33:932-6.13 Uchikoshi F, Sakamoto T, Imabunn S, Lee S, Taniguchi E, Kai Y, et al. Aneurysm of the right gastroepiploic artery: a case report of laparoscopic resection. Cardiovascular surgery (London, England). 1993;1:550-1.

A Case of Unruptured Right Gastroepiploic Artery Aneurysm Successfully Resected by Laparoscopic Surgery

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A Case of Unruptured Right Gastroepiploic Artery Aneurysm Successfully Resected by Laparoscopic Surgery

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