腹腔干、肠系膜上动脉共干部动脉瘤的切除和血管重建探讨

目的探讨腹腔干、肠系膜上动脉畸形共干部真性动脉瘤的切除以及血管重建的手术治疗方法。方法回顾性总结1998年2月至2006年4月6例患者临床资料,均在全身麻醉下行动脉瘤切除,肾下主动脉与肝动脉、脾动脉、肠系膜上动脉行转流手术5例,行主动脉肝动脉转流、肠系膜上动脉成形术1例。结果均获得临床治愈,随访观察2月~8年,无一例复发。结论腹腔干、肠系膜上动脉畸形共干部动脉瘤切除,主动脉与内脏动脉转流或重建是一种安全有效的治疗方法。     

Aneurysm of the Gastroduodenal Artery Associated with Absence of the Celiac Axis: Report of a Case

A 65-year-old woman was referred to us for treatment of an aneurysm, found incidentally by abdominal ultrasonography. Angiography demonstrated a saccular aneurysm of the gastroduodenal artery and absence of blood flow from the celiac axis. The blood flow in the hepatic artery, splenic artery, and other arteries originating from the celiac axis was supplied by the superior mesenteric artery through one dilated and elongated pancreaticoduodenal artery and the gastroduodenal artery. The aneurysm was resected, and the inflow and outflow arteries were reconstructed with end-to-end anastomoses. Pathologic examination of the aneurysm sac showed diffuse intimal thickening with focal atheromas. We speculate that the increased blood flow compensating for the absence of blood flow from the celiac axis was an etiologic factor predisposing to the formation of this gastroduodenal artery aneurysm.     

Pancreaticoduodenectomy and the celiac artery compression syndrome

Celiac compression is usually a benign condition, but when surgery necessitates division of collaterals from the superior mesenteric artery, it may cause life-threatening gut ischemia. We report a case of cholangiocarcinoma necessitating pancreaticoduodenectomy in a patient with celiac artery compression by the median arcuate ligament. Preoperative duplex scanning confirmed the celiac stenosis and revealed retrograde flow through collaterals from the superior mesenteric artery. Intraoperative continuous wave Doppler examination revealed that gastric blood flow disappeared with compression of the superior mesenteric artery. This maneuver no longer affected gastric flow after transection of the compressing structures at the celiac origin. Preoperative identification of celiac artery stenosis is crucial to prevent small bowel ischemia and possible anastomotic breakdown or liver failure. Duplex scanning can provide important insight about collateral circulation, and intraoperative Doppler testing can assess the adequacy of revascularization.     

Hémorragie digestive par rupture d'un anévrisme des artères viscérales. Présentation de quatre observations

Study aimGastrointestinal bleeding by rupture of splanchnic artery aneurysms is very rare. The aim of this study is to report four cases observed between 1990 and 1996.Materials and methodsIn the first case, the celiac trunk aneurysm was revealed by hematemesis due to erosion of the posterior wall of the stomach. Excision of the aneurysm associated with splenopancreatectomy was followed by revascularization of the common hepatic artery with a bypass implanted in the aorta. The second case concerned a splenic artery aneurysm revealed by hemosuccus pancreaticus and intestinal bleeding which was treated by excision and splenopancreatectomy. In the third case, the common hepatic artery aneurysm revealed by hemosuccus pancreaticus and intestinal bleeding was treated by obstructive endoaneurysmorrhaphy. The fourth case concerned a superior mesenteric aneurysm revealed by duodenal erosion causing gastric and intestinal bleeding, which was treated by obstructive endoaneurysmorrhaphy and revascularization of the mesenteric artery by a spleno-mesenteric bypass.ResultsSurgical treatment was successful in all four patients. In the first case, an acute acalculous cholecystitis required a cholecystectomy after 3 weeks. In the fourth case, a splenic infarction disappeared spontaneously.ConclusionSuch observations are rare. The site of the bleeding was located by endoscopy. The aneurysm was recognized by contrast-enhanced computerized tomography (CT) scan and/or celiac and mesenteric arteriography which was performed in all cases and was very useful for the management of such aneurysms. After excision (n = 2) or obliterative endoaneurysmorrhaphy (n = 2), revascularization had to be done in two cases for celiac and mesenteric aneurysms.     

Significance of intraoperative monitoring of arterial blood flow velocity and hepatic venous oxygen saturation for performing minimally invasive surgery in a patient with multiple calcified pancreaticoduodenal aneurysms with celiac artery occlusion

Even for patients with multiple pancreaticoduodenal aneurysms, successful treatment with noninvasive operative procedures can be employed, if intraoperative devices are considered. A 73-year-old man, without any symptoms, was admitted to our hospital and had computed tomography (CT) scanning to examine his liver for hepatitis C virus (HCV). Selective superior mesenteric artery (SMA) angiography confirmed multiple aneurysms in the anterior inferior pancreaticoduodenal artery (AIPDA), one aneurysm in the posterior inferior mesenteric artery (PIPDA), and another in the occluded celiac trunk, all with severe calcification. All of the aneurysms were thought to communicate with each other. With the celiac artery occlusion, the right hepatic artery (RHA) was revealed to be supplied by collateral arteries from the aneurysms in the AIPDA, and the left hepatic artery was shown to be supplied by collaterals from the left gastric artery. Intraoperative Doppler echography, at the time of the clamping of both IPDAs, demonstrated a marked decrease of blood velocity in all aneurysms (before clamping, >50 cm/s; after, <10 cm/s), although loss of pulsation and a marked decrease of flow in the RHA were inevitable. Therefore, each of these two IPDAs were ligated on the proximal side to the aneurysm, thus preserving the blood flow of the pancreas head fed by the PIPDA; bypass grafting from the AIPDA to the RHA, using the great saphenous vein, was done at the same time. After the creation of an anastomosis, the hepatic venous oxygen saturation (ShvO2) increased from 38% (at the time of ligation of the IPDAs) to 57% under ventilation. The patient's postoperative clinical course was uneventful. We describe and discuss our successful noninvasive operative management of multiple pancreaticoduodenal aneurysms, done while monitoring the blood flow and ShvO2, with some consideration of the literature.     

Hemodynamic benefits of celiac artery release for ruptured right gastric artery aneurysm associated with median arcuate ligament syndrome: a case report

Background

It has been reported that median arcuate ligament syndrome is closely associated with gastric or pancreaticoduodenal artery aneurysms. Hemodynamic state plays an important role in the formation of the aneurysms. These aneurysms are treated with open resection or endovascular exclusion. However, whether revascularization of the celiac artery can prevent the aneurysm formation is unknown. This report indicated a possibility that prophylactic revascularization for celiac artery stenosis resulted in decreased shear stress on the collaterals, which may otherwise be susceptible to new aneurysms.

Case presentation

This report describes a 51-year-old man who presented with epigastric pain at our hospital. According to contrast enhanced computed tomography (CT), he was diagnosed with a ruptured right gastric artery aneurysm and celiac artery stenosis caused by the median arcuate ligament (MAL). He had a vascular anomaly of the common hepatic artery arising from the superior mesenteric artery (SMA). His vital signs were stable. We informed him of the situation and he chose open surgery rather than endovascular treatment. Following, we resected the aneurysm and transected the MAL. Intraoperative angiography after transection of the MAL showed the antegrade blood flow to the splenic artery instead of the retrograde flow via the prominent collaterals. Follow-up CT confirmed narrowed collateral vessels between the SMA and the celiac artery without de-novo aneurysms.

Conclusion

While the necessity of celiac artery release could be questioned, the present case supports the hemodynamic benefits of MAL transection in terms of de-novo aneurysm prevention.

     

Giant celiac artery aneurysm: Treatment by transcatheter coil embolization

Celiac artery aneurysms (CAA) are one of the rarest forms of visceral artery aneurysms. Most patients are a symptomatic at the time of diagnosis and aneurysms are detected incidentally during diagnostic imaging for other diseases. We present the case of a 42-year-old man who had an asymptomatic giant CAA detected incidentally by an abdominal ultrasound investigating an abdominal pain. A contrast enhanced computed tomography angiogram (CTA) revealed a large CAA measuring 7.1 cm × 4.3 cm with extensive collaterals from the superior mesenteric artery (SMA). The aneurysm sac was mostly filled with thrombus with the celiac artery branches occluded. Pre-procedural angiography and transcatheter embolization procedures were performed at the same session. Endovascular exclusion was performed by transcatheter coil embolization and packing of the aneurysm sack. Technical success was achieved by the absence of flow in the aneurysm, and preservation of the native circulation on angiograms obtained just after the transcatheter coil embolization procedure. One week postembolization, a CTA confirmed thrombosis of the aneurysm. The patient returned for a follow-up CTA 3, 6, 12 and 48 months after embolization. The aneurysm was thrombosed and the patient remained a symptomatic. The surgical mode of treatment of CAA is increasingly being replaced by endovascular embolization because of the lower morbidity and mortality and high success rate. The accepted endovascular approach is by coil embolization of the aneurysmal lumen, the proximal and distal aneurysmal neck, or both.     

Aneurysm of the inferior mesenteric artery associated with occlusion of the celiac axis and superior mesenteric artery

The authors report a case of aneurysm of the inferior mesenteric artery encountered in a 38-year-old man, associated with occlusion of the celiac axis, the superior mesenteric artery and the inferior mesenteric artery distal to the aneurysm. All three arteries were revascularized. In spite of failure in the bypass of the superior mesenteric artery, the patient remained symptom free until his demise four years later, from a probable myocardial infarction. Only 11 cases of aneurysms of the inferior mesenteric artery have been reported in the literature. The causes, diagnosis and treatment of these uncommon lesions are discussed. When occlusion of the celiac axis is associated with that of the superior mesenteric artery, a complete mesenteric revascularization should be attempted whenever possible.     

An Alternative Technique in the Treatment of Celiac Axis Stenosis Diagnosed During Pancreaticoduodenectomy

Celiac compression is usually a benign condition, but when surgery necessitates division of collaterals from the superior mesenteric artery, it may cause life-threatening celiac organ ischemia. Celiac axis obstruction is found in 12.5% to 49.7% of patients during abdominal angiography. In such patients, the arterial blood supply to the stomach, spleen, and liver is sustained through extraordinarily welldeveloped pathways in the pancreas.Though collateral pathways may be sacrificed during pancreaticoduodenectomy, only a small proportion of patients develop hepatic, gastric and splenic ischemia during the procedure. If the appropriate angiographic studies have not been obtained before pancreatic resection, a test occlusion of the gastroduodenal artery, as recommended by Bull et al. [2], should precede its ligation. The hepatic arteries are palpated before and after the test occlusion. In the occasional patient in whom the pulse diminishes during occlusion or if there is evidence of upper abdominal visceral ischemia, revascularization of the celiac circulation may be required. Reestablishment of the celiac circulation may be accomplished by the use of a vein graft between the aorta and the celiac tributaries. This article describes an alternative technique for revascularization of the celiac circulation without the use of a venous graft.     

Morphometric Study of Coeliac Trunk Specific Reference to Hepatic Artery Pattern in the West-Indian Population

The aim of this study was to analyze anatomy of the celiac trunk through its diameter, length, and variation of its branches. We studied 40 cadavers (25 males and 15 females) in the various colleges in the west India for the variation in the celiac trunk. Dissection of the celiac trunk was performed after opening of the peritoneal cavity. The length of the celiac trunk up to the common hepatic artery was observed. Diameter of the celiac trunk and distance between the celiac trunk and the superior mesenteric artery were observed. We found cases of rare vascular variation in the branching pattern and the common hepatic artery, which arises from the superior mesenteric artery and there is abnormal relation between the common hepatic artery portal vein and the bile duct. In a case we have observed that the superior mesenteric artery gives acute angulations downward on the right side. This type of study of celiac trunk and presence of variation in hepatic arteries will allow the surgeon to practice safe laparoscopic cholecystectomy, liver resections, or vascular recombination in transplantation and, thereby, avoid errors and patient morbidity.     

腹腔干结扎可行性临床研究进展

目的探讨腹腔干结扎的可行性。方法收集和回顾有关腹腔干结扎的相关文献。结果腹腔干分为肝总动脉、脾动脉及胃左动脉3支，腹腔干分支的变异较多而且与肠系膜上动脉之间通过胃十二指肠动脉和胰十二指肠动脉形成广泛的侧支吻合。腹腔干损伤、腹腔干动脉瘤、上消化道出血、腹腔干周围肿瘤切除和门静脉高压症的病例中，腹腔干结扎后不会有明显的并发症。但是，腹腔干结扎亦可能导致胆囊坏死、穿孔，肝脏的局限性梗死，甚至比较高的死亡率。结论腹腔干结扎还不是常规的治疗手段，但是在特定的情况下，腹腔干结扎可能是一种可行和有效的挽救生命的治疗手段。     

Open surgical repair using a reimplantation technique for a large celiac artery aneurysm anomalously arising from the celiomesenteric trunk

Celiac artery aneurysms anomalously arising from the celiomesenteric trunk (hepatosplenomesenteric trunk) are rare, with only four patients reported thus far. Surgical intervention for this condition is challenging, particularly when the aneurysm is large and in a retropancreatic location. We report an open repair surgery in a 54-year-old asymptomatic man who presented with a saccular calcified aneurysm (diameter, 4.0 cm) of the celiac artery originating from the celiomesenteric trunk. Our technique involved minimal dissection of the surrounding vessels and complete aneurysm resection, along with revascularization of the hepatic, splenic, and superior mesenteric arteries with a single anastomosis.     

Reconstruction of the hepatic artery with the middle colic artery is feasible in distal pancreatectomy with celiac axis resection: A case report

Despite the advance of diagnostic modalities, carcinoma in the body and tail of the pancreas are commonly presented at a late stage. With unresectable lesions, long-term survival is extremely rare, and surgery remains the only curative option for pancreatic cancer. An aggressive approach by applying extended distal pancreatectomy with the resection of the celiac axis may increase the resectability and analgesic effect but great care must be taken with the arterial blood supply to the liver and stomach. Sometimes, accidental injury to the pancreatoduodenal artery compromises collateral blood flow and leads to fatal complications. Therefore, knowledge of any alternative restoration of the compromised collateral flow before surgery is essential. The present case report shows a patient with a pancreatic body cancer in whom the splenic, celiac, and common hepatic arteries were involved with the tumor, which extended almost to the root of the gastroduodenal artery. We modified the procedure by reanastomosis between the proper hepatic artery and middle colic artery without vascular graft. The postoperative course was uneventful, and the patient was discharged on post-operative day 19. The patient was immediately free of epigastric and back pain.     

Autogenous vein graft from iliac artery to splenic artery for celiac occlusion in pancreaticoduodenectomy

This is a report of two patients with bile duct cancer and periampullary cancer with celiac axis occlusion who underwent pylorus-preserving pancreaticoduodenectomy and pancreaticoduodenectomy, respectively. Preoperative arteriography demonstrated complete obstruction of the celiac axis. The arterial blood flow to the liver, spleen, and stomach was sustained through the pancreaticoduodenal arcades and collaterals from the superior mesenteric artery. Therefore, reconstruction of the celiac axis circulation was required before division of the gastroduodenal artery. An autograft of the saphenous vein was placed between the iliac artery and the splenic artery, and subsequently pancreaticoduodenectomy was performed. The patients' postoperative courses were uneventful. Postoperative arteriography demonstrated patency of the grafts. When occlusion of the celiac axis exists, a bypass from the iliac artery to the splenic artery using a saphenous vein graft, may be safely and easily performed at the time of pancreaticoduodenal resection. Received: May 6, 2002 / Accepted: December 17, 2002 RID="*" ID="*" Offprint requests to: H. Okamoto     

Outcome after celiac artery coverage during endovascular thoracic aortic aneurysm repair: preliminary results

BACKGROUND: Endovascular repair of descending thoracic aortic aneurysms has emerged as an alternative to open repair. Coverage of the left subclavian origin has been reported to expand the proximal sealing zone. We report the planned coverage of the celiac artery origin with a thoracic stent graft to achieve an adequate distal sealing zone. METHODS: All patients undergoing endovascular aneurysm repair are prospectively entered into a computerized database. All patients who underwent thoracic endovascular aneurysm repair with coverage of the celiac artery origin were identified and retrospectively analyzed. End points for evaluation included indications for covering the celiac artery, anatomic features of the distal landing zone, demonstration of collateral circulation between the celiac artery and the superior mesenteric artery, technical success of the procedure, and presence of clinical ischemic symptoms after the procedure. RESULTS: Between March 2005 and May 2006, 46 patients underwent endovascular repair of descending thoracic aortic aneurysms. Seven patients had planned celiac artery coverage with a thoracic stent graft to secure an adequate distal sealing zone. Six patients demonstrated collateral circulation through the gastroduodenal artery between the celiac and superior mesenteric arteries before deployment of the stent graft. One patient had a distal type I endoleak at the conclusion of the procedure related to inadequate sealing at the superior mesenteric artery origin. No type II endoleaks were evident at the final intraoperative angiogram or 30-day computed tomography scan. There were no postoperative deaths, no ischemic abdominal complications, and no clinical spinal cord ischemia. Short-term follow-up (1 to 10 months) has demonstrated no additional endoleaks (type I not fully assessed), no aneurysm growth, and no aneurysm ruptures. CONCLUSION: This limited series supports the suitability, in selected patients, of covering the celiac artery origin for a distal landing zone when the distal sealing zone proximal to the celiac artery is inadequate. We recommend the angiographic evaluation of the collateral circulation between the celiac and superior mesenteric arteries when covering the celiac artery origin is being considered.     

Aneurysms of anomalous splenomesenteric trunk: Clinical features and surgical management in two cases

Aneurysms of the splenic artery that anomalously arise from a splenomesenteric trunk are a rarity. Aneurysmal disease of visceral arteries is found in only 0.2% of the general population. The celiac trunk and superior mesenteric artery (SMA) are involved in less than 10% of all visceral aneurysms. Although rupture seems to occur in 20% to 22% of patients, the related mortality rate can rise as high as 100%. Anomalies of the celiac trunk and SMA, more common than previously claimed, include the splenic artery arising from the SMA, which occurs in only 1% of patients. We present two cases of young patients who had 4-cm aneurysms behind the pancreas that involved an anomalous splenic artery. The first patient required dissection of the entire splenopancreatic bloc through a transverse abdominal incision to excise the aneurysm and repair the SMA. The second patient was treated by the classic approach, through a median incision and by entering the mesenteric root. There do not seem to be reports of similar cases, except for two cases of aneurysms involving the celiomesenteric trunk. The cause of these aneurysms can be attributed to mesenchymal alterations during the embryonic formation of aortic collateral branches. A correct surgical approach to splanchnic aneurysms calls for awareness of potential vascular variations of the arteries and their collateral pathways. (J Vasc Surg 1996;24:687-92.)     

Successfully-treated asymptomatic celiac artery aneurysm: A case report

BackgroundCeliac artery aneurysm is a rare vascular lesion. It is frequently discovered after rupture, which leads to death in most cases. We present a case of an asymptomatic celiac artery aneurysm discovered in a 72-year-old female during an evaluation for high grade fever and general fatigue.Case presentationThe patient visited our department with complaints of fever and general fatigue. The patient’s medical history included type 2 diabetes mellitus with poor control and hypertension. Blood culture and urine culture that were submitted at arrival presented E. Coli. Then, she was diagnosed with bacteremia by urinary tract infection. Transesophageal echocardiography revealed no vegetation at her valves. Computed tomography was performed for investigating her urological abnormalities, revealing a 28 × 30 mm aneurysm at the trunk of the celiac artery. Blood and urine cultures submitted at arrival were positive for E. coli. Surgical repair performed after the improvement of her urinary tract infection revealed a non-infective aneurysm; thus, aneurysm closure and prosthetic grafting were conducted.ConclusionClinician awareness regarding this rare entity and discovery efforts to discover the splanchnic aneurysm before rupturing are imperative.     

Thoracoabdominal aortic aneurysm combined with inferior mesenteric artery aneurysm and occlusion of celiac and superior mesenteric arteries

A 56-year-old man with thoracoabdominal aortic aneurysm combined with inferior mesenteric artery aneurysm and occlusion of celiac and superior mesenteric arteries is presented. Contrast-enhanced computed tomography (CT) and aortography revealed thoracoabdominal aortic aneurysm of 6 cm in diameter, accompanied by inferior mesenteric aneurysm of 3 cm in diameter. Severe calcification of the abdominal aorta and occlusion of the celiac and the superior mesenteric arteries were also noted, whose territories were perfused by collateral circulation of the inferior mesenteric artery. At the operation, orifice of the left renal artery was stenosed by severe calcification, which was resected. Because of severe adhesion around the origins of celiac and superior mesenteric arteries, they were left unrevascularized. The thoracoabdominal aortic aneurysm was replaced with an Dacron tube graft, whose side branch was anastomosed to the inferior mesenteric artery after resection of its aneurysm. The postoperative course was uneventful, and no symptoms of intestinal ischemia were noted. As blood supply to the abdominal viscera mostly depends on the inferior mesenteric artery, careful follow-up is necessary.     

Reno-hepatic artery bypass for an inferior pancreaticoduodenal artery aneurysm with associated celiac occlusion

Pancreaticoduodenal artery (PDA) aneurysms are rare and often found in association with lesions of the celiac axis. We report the case of a 72-year-old morbidly obese male who presented with chronic abdominal pain and a 4.5 cm inferior PDA aneurysm with associated occlusion of the celiac axis. The patient was treated successfully with right renal to common hepatic artery bypass followed by aneurysm ligation and excision. When encountered, PDA aneurysms require expeditious treatment. Precise definition of vascular anatomy and collateral flow is mandatory. While endovascular techniques may aid in management, surgery remains the most effective treatment for complex aneurysms of the pancreaticoduodenal arteries.     

Celiac axis occlusion with replaced common hepatic artery and pancreatoduodenectomy

A rare case of intraductal papillary mucinous tumor of the pancreas associated with a replaced common hepatic artery and celiac axis occlusion, which was treated by pancreatoduodenectomy, is reported. In this patient, the celiac trunk was occluded at its root and the splenic and left gastric artery could be visualized serially via the enlarged collateral artery on superior mesenteric arteriography. At surgery, the collateral artery was carefully preserved and pancreatoduodenectomy was successfully performed without ischemia of the stomach, spleen, and remnant pancreas. Although celiac axis occlusion is an uncommon finding for patients undergoing pancreatoduodenectomy, we recommend performing celio-mesenteric angiography before pancreatoduodenectomy, and, at surgery, clamping of the gastroduodenal artery is required for patients with celiac axis occlusion.