Aortoesophageal fistula: a comprehensive review of the literature

Aortoesophageal fistula: value of in situ aortic allograft replacement

PURPOSE

The purpose of this report is to describe our experience in management of aortoesophageal fistulas (AEF) with special emphasis on the value of in situ aortic allograft replacement.

PATIENTS

Nine patients presenting with AEF were observed between May 1988 and April 2002. There were 4 men and 5 women with a mean age of 54.3 years (range, 32-77 years). Six patients presented secondary AEF after aortic repair. Two patients presented primary AEF after rupture of an atherosclerotic aneurysm into the esophagus. In the remaining patient, AEF was caused by swallowing a fishbone. In 6 cases involving true AEF with a direct communication between the aorta and esophagus, massive exsanguinating hematemesis occurred. It was usually preceded by minor sentinel bleeding. Two patients presented esophagoparaprosthetic fistula (EPPF). One patient presented primary AEF that was contained by a large thrombus in the communication. The clinical picture in these 3 patients involved severe sepsis without hemorrhage.

RESULTS

Two patients died as a result of massive hemorrhage before assessment and surgical treatment could be undertaken. One 77-year-old woman presenting EPPF refused to undergo surgery and died because of infection. The remaining 6 patients underwent surgical treatment with various outcomes. One man died during thoracotomy caused by exsanguinating hemorrhage. One woman presenting EPPF was treated by exclusion followed by ascending aorta to abdominal aorta bypass grafting, removal of the prosthesis, esophageal exclusion, and directed esophageal fistula. She died of infection. The other 4 patients were treated by in situ aortic allograft replacement. The damaged esophagus was repaired by using the Thal technique in 1 patient. In the remaining 3 cases subtotal esophagectomy was performed in association with cervical esophagostomy, ligation of the abdominal esophagus, gastrostomy, and jejunostomy. One patient died of sepsis during the first 24 hours after the operation. The other 3 patients underwent secondary esophagoplasty and survived with no further sign of infection. Mean duration of follow-up in the survivor group was 53 months (range, 15-95 months). Overall 6 patients, including 3 that did not undergo surgical treatment, died and 3 patients survived.

CONCLUSION

Our experience confirms that AEF is a rare but catastrophic disorder. In situ allograft replacement usually in association with subtotal esophagectomy appears to be an excellent salvage modality whenever emergency surgery is feasible.

Secondary aortoesophageal fistula after endoluminal exclusion because of thoracic aortic transection

Secondary aortoesophageal fistula (AEF) is a rare but catastrophic complication that occurs after thoracic aortic reconstruction. Recently endoluminal stent grafts have been used in selected patients with a thoracic aortic aneurysm, dissection, or traumatic aortic transection. A 24-year-old woman had massive upper gastrointestinal tract bleeding 15 months after endoluminal stent graft placement because of traumatic descending thoracic aortic transection. Evaluation demonstrated an AEF from the mid-esophagus to the endoluminal stent graft. The endoluminal graft was explanted, with primary repair of the thoracic aortic defect and simultaneous primary repair of the esophageal injury. The patient is well 15 months after open repair of the AEF.

Arterial-esophageal fistula: a complication of nasogastric tube placement after lumbar spine surgery: a case report

STUDY DESIGN

A case of arterial-esophageal fistula related to nasogastric tube placement in a 13-year-old girl after surgical correction of her progressive congenital lumbar kyphosis is presented.

OBJECTIVES

This case report illustrates the importance of early recognition of "sentinel" hematemesis before massive hemorrhage, as this may allow for timely surgical intervention to prevent fatal exsanguination. The proposed pathogenesis of the arterial-esophageal fistula in the reported patient is discussed.

SUMMARY OF BACKGROUND DATA

Although arterial-esophageal fistula formation has been recognized as an unusual complication of prolonged nasogastric intubation, to the authors' knowledge, this is the only case that illustrates an association of this complication with short-term nasogastric tube placement.

METHODS

A 13-year-old girl was evaluated for progressive congenital lumbar kyphosis. Failure of segmentation and an anterior bar at L4-L5 was diagnosed when the patient was 7 years of age. At that time, she showed 28 degrees of kyphosis from L3 to L5. Because of her cardiopulmonary status at the time, she was deemed not to be a candidate for a corrective surgical procedure and followed conservatively until the age of 13 years. At that time, her gibbus deformity was 56 degrees from L3 to L5. She had significant ventral sagittal imbalance, which in combination with her cardiopulmonary abnormalities created difficulty with ambulation. Her preoperative neurologic examination was within normal limits. The patient had an extensive history of congenital cyanotic cardiopulmonary disease. She was born with pulmonary atresia, right-sided aortic arch with mirror image branching, a large coronary sinus type atrial septal defect, and a large ventricular septal defect. She had history of multiple surgical procedures for correction of her congenital cardiopulmonary abnormalities. The patient underwent posterior L3 and L5 wedge pedicle reduction osteotomies with posterior instrumentation and fusion from L2 to S1 using pedicle screw segmental fixation. A nasogastric tube was placed after surgery. On postoperative day 7, profuse bleeding from the patient's mouth and nose developed, which subsequently ceased. Shortly afterward, she became hypotensive and tachycardic. Upper gastrointestinal endoscopy showed a large amount of blood in her stomach without an active source. Cardiac arrest then developed, and she could not be resuscitated. The autopsy findings were consistent with an arterial-esophageal fistula.

RESULTS

In the reported patient, the anomalous aortic arch system provided direct contact between the aorta and the esophagus. Dense fibrous adhesions between the aorta and esophagus resulting from multiple previous thoracic surgeries also may have facilitated the development of the fistula by the nasogastric tube in this patient.

CONCLUSIONS

Patients with congenital cardiac abnormalities frequently also have congenital spinal deformities. These patients may undergo spinal correction procedures requiring nasogastric intubation. Increased awareness of arterial-esophageal fistula among the spine surgery community may enhance early recognition and treatment of this potentially lethal condition.

Aortoesophageal fistula in a 13-yr-old girl: complication after nasogastric tube placement in the setting of right-sided aortic arch

OBJECTIVE

To report a case of aortoesophageal fistula in a 13-yr-old girl with a right aortic arch that occurred after nasogastric intubation after surgery for lumbar kyphosis.

DESIGN

Case report.

SETTING

Tertiary care pediatric intensive care unit.

PATIENTS

One 13-yr-old girl who underwent operative repair of a 45-degree kyphosis at the level of the second to fourth lumbar vertebrae.

MAIN RESULTS

On the eighth postoperative day after operative kyphosis repair and intraoperative placement of a nasogastric tube, sudden massive hematemesis developed and the patient died. Autopsy revealed esophageal ulceration with erosions. One of these had a fistulous tract connecting to the descending aorta. The aortoesophageal fistula was observed where the descending aorta indented the posterior wall of the esophagus, as the aorta crossed the midline from the right side to the left side of the body.

CONCLUSION

In the setting of right-sided aortic arch and other abnormalities of the aortic arch, nasogastric intubation may result in aortoesophageal fistula, massive hemorrhage, and death. Right-sided aortic arch should be added to the list of conditions for which utmost caution during nasogastric intubation is warranted.

Radiation-induced aortoesophageal fistula: an unusual case of massive upper gastrointestinal bleeding

Aortoesophageal fistula (AEF) is an unusual cause of massive upper gastrointestinal bleeding. Thoracic aortic aneurysm is the most common etiology of primary AEF followed by, respectively, foreign body ingestion, esophageal malignancy, and postsurgical fistulization. Radiation-induced damage to the great vessels is well recognized and some authors in the past have suggested that AEF may be caused by radiotherapy. However, previous case reports of radiation-induced AEF involved patients who received radiotherapy for esophageal carcinoma, and precise histopathologic differentiation between AEF secondary to esophageal malignancy and that induced by radiation was difficult. We present here the unique case of a patient with a non-esophageal carcinoma who received radiotherapy before the development of an AEF, thus providing further evidence for the role of radiation injury in the development of this condition. As well, we discuss current opinion regarding etiology, clinical presentation, diagnosis, and management of this entity.

Acquired gastrointestinal fistulas: classification, etiologies, and imaging evaluation

Fistulas are abnormal communications between two epithelial-lined surfaces. Gastrointestinal fistulas encompass all such connections that involve the alimentary tract, and they can be congenital or acquired in nature. This review focuses on acquired gastrointestinal fistulas. Development of an acquired gastrointestinal fistula can greatly affect patient outcome, yet the clinical manifestations are often protean in nature and the etiology, elusive. Imaging plays an important role in the detection and management of acquired gastrointestinal fistulas. The more routine use of cross-sectional imaging (especially computed tomography and magnetic resonance imaging) has altered the standard sequence of radiologic evaluation for possible fistulas, but fluoroscopic studies remain a valuable complement, especially for confirming and defining the anomalous communications. In this review, a classification scheme for gastrointestinal fistulas is provided, major causes are discussed, and individual fistula types are elaborated with an emphasis on contemporary imaging approaches.

Primary aortoesophageal fistula secondary to thoracic aneurysm. Successful surgical treatment by extra-anatomic bypass grafting

Aortoesophageal fistula (AEF) secondary to thoracic aneurysm is rare, and is usually fatal without prompt surgical intervention, with few survivors reported. Here we report a case of a 68-year-old woman late-presenting AEF successfully treated by extra-anatomic bypass grafting. Since she had already a mediastinal infection caused by AEF on admission, we performed extra-anatomic bypass grafting from the ascending aorta to the infrarenal aorta, and primary esophageal repair. The extra-anatomic bypass grafting was performed to avoid the risk to secondary graft infection and to decrease the total ishemic time induced by intraoperative aortic clamping, which is necessary when in-situ graft replacement is chosen. Although only 17 cases (including the present case) have been reported as long-term survivors, most have involved in-situ repair of the thoracic aneurysm. To our knowledge, the present case was only the second treated successfully by extra-anatomic bypass grafting. We recommend extra-anatomic bypass grafting for a case with severe infection and prolonged hypoperfusion insult caused by massive bleeding due to rupture in an aneurysm.

ALK-positive anaplastic large T-cell lymphoma preceded by Epstein-Barr virus infection complicated by development of an aorto-esophageal fistula

We report an unusual case of aggressive ALK-positive anaplastic large cell lymphoma with widespread mediastinal involvement immediately preceded by an acute Epstein-Barr virus (EBV) infection. Following initiation of chemotherapy and radiological evidence of significant tumor regression, the patient suffered a fatal massive upper gastrointestinal hemorrhage from an aorto-esophageal fistula. The relevant literature relating to EBV in the pathogenesis of ALK-lymphomas and literature relating to aorto-enteric fistula (AEF) in mediastinal lymphoma is reviewed.

Successful repair of an aortoesophageal fistula with aneurysm from esophageal diverticulum

Aortoesophageal fistula is a rare, frequently fatal, cause of upper gastrointestinal bleeding, and there are few reported survivors of it. We report a successful surgical case of aortoesophageal fistula associated with an infective thoracic aortic aneurysm. The patient had been diagnosed as having an esophageal diverticulum 8 months before admission. The aortoesophageal fistula was completely resected, followed by esophagojejunum anastomosis and patch closure for the entry of the aneurysm and omental coverage to the wall of the descending aorta in one stage. In this case, esophageal diverticulum was diagnosed before the development of an aortoesophageal fistula associated with an aneurysm.

Mycotic arch aneurysm and aortoesophageal fistula in a patient with melioidosis

Aortoesophageal fistula due to an aortic arch aneurysm is a rare entity with an extremely high mortality. There are few reports of successfully managed cases and even fewer of long term survival. We report a case of an aortoesophageal fistula resulting from a mycotic pseudoaneurysm of the distal aortic arch in a patient with melioidosis, its surgical management, and outcome.

Surgical management of primary aortoesophageal fistula secondary to thoracic aneurysm

Aortoesophageal fistula, secondary to thoracic aortic aneurysm, is an uncommon cause of gastrointestinal bleeding that is uniformly fatal without surgical intervention. These may be primary fistulas, in cases of thoracic aortic aneurysm without previous repair, or secondary fistulas occurring after surgical repair of thoracic aortic aneurysm. Surgical treatment has been successful in a small number of cases of primary aortoesophageal fistula, secondary to thoracic aortic aneurysm, but techniques used have varied. We report a successful repair of primary aortoesophageal fistula, secondary to descending thoracic aortic aneurysm, and review the evolution of management since the three previously reported successful repairs at our institution.

Indications and operative techniques for combined aortoesophageal resection

Combined aortoesophageal resection was performed in 8 patients, including 7 with esophageal carcinoma and 1 with aortoesophageal fistula. Aortic resection procedures included segmental resection with permanent aorto-aortic bypass (1 case), segmental resection with graft interposition (1 case), semicircumferential resection with patch aortoplasty (3 cases), wedge resection with lateral aortorrhaphy (1 case), and resection of adventitia (2 cases). Protective methods during aortic cross-clamping included one aorto-aortic permanent bypass, one subclavian-aortic bypass, and three axillo-femoral bypass. Postoperative complications include mediastinal abscess, paresis, arrythmia, and pneumonia. Five patients with esophageal carcinoma died within 6 postoperative months. In 4 of these 5 nonsurvivors, metastasis to distant organs including the liver, bone and peritoneal cavity were found at the time of death or autopsy. Those early recurrence cases were characterized by skip lesions and extensive lymph node metastasis with extranodal invasion. The clinical benefit of aortoesophageal resection will be attained by careful preoperative evaluation for case selection and a sufficient protective method for aortic cross-clamping.

Aortoesophageal fistula: recognition and diagnosis in the emergency department

An aortoesophageal fistula is a life-threatening cause of gastrointestinal bleeding where an abnormal communication between the esophagus and the aorta may result from a thoracic aortic aneurysm, foreign body ingestion, esophageal malignancy, or postoperative complications. The diagnosis can be made on the basis of clinical findings alone. Classic patients present with the triad of midthoracic pain, sentinel arterial hemorrhage, and exsanguination after a symptom-free interval (Chiari's triad). The identification of massive upper gastrointestinal hemorrhage that is bright red and arterial in nature is characteristic. Most diagnostic tests have significant individual limitations. Endoscopy of the upper gastrointestinal tract should exclude alternative bleeding sources and may show a submucosal hematoma. Aortography may be useful during active hemorrhage to demonstrate the fistula, but results of aortography may be negative during the symptom-free interval. Dynamic computed tomography may be a more rapid alternative. For patients who are in stable condition after the sentinel hemorrhage, a confirmatory test is reasonable. Patients in unstable condition should undergo immediate surgery. Survival is now possible with rapid surgical intervention.

Aorto-oesophageal fistula presenting as a submucosal oesophageal haematoma

The CT findings in a fatal case of aorto-oesophageal fistula secondary to an atheromatous plaque in the thoracic aorta are described. These features are correlated with findings on endoscopy and barium studies.

Successful repair of aortoesophageal fistula secondary to traumatic pseudoaneurysm

There have previously been only rare reported survivors of an aortoesophageal fistula resulting from a traumatic pseudoaneurysm. We report a case of a young man with a dramatic presentation who was successfully managed by immediate operative repair. A prosthetic graft was sewn within the sac of the aneurysm, with the aneurysm wall being used to protect the graft, and the esophagus was resected. Staged reconstruction of the esophagus was subsequently performed successfully. The patient is now alive and well 2 1/2 years later.

Repair of aortoesophageal fistula after aortic grafting

This report describes repair of an aortoesophageal fistula caused by a previously placed thoracic aortic graft. The diagnosis was made by esophagoscopy. The repair consisted of femoral-to-femoral cardiopulmonary bypass, excision of the old graft, placement of a new graft, esophagectomy, cervical esophagostomy, gastrostomy, and later reconstruction by cervical esophagogastrostomy.

Survival after aberrant right subclavian artery-esophageal fistula: case report and literature review

Development of a fistula between an aberrant right subclavian artery and the esophagus is a rare cause of heretofore fatal hematemesis. We report the first known survivor of this devastating complication of the most common aortic arch anomaly. Intraoperative esophagogastroduodenoscopy, intraesophageal balloon tamponade, and arteriography were the keys to successful management. This lesion should be suspected in the setting of bright red, "arterial" hematemesis. Prolonged nasogastric and/or endotracheal intubation should be avoided in patients with a known aberrant right subclavian artery or other aortic arch anomaly.

Successful management of an aortoesophageal fistula using a cryopreserved arterial allograft

We report a case of aortoesophageal fistula occurring as a complication of colonic esophagoplasty. Emergency treatment during the hemorrhagic phase combined aortic replacement using a cryopreserved arterial allograft and digestive tract exclusion. Immediate recovery and follow-up at 8 months were good. This is the first reported case of successful in situ aortic replacement using a cryopreserved allograft for an aortoesophageal fistula. The lack of previous reports of successful treatment and related treatment modalities are discussed.

Aortoesophageal fistula and double aortic arch: two important points in management

Two children with double aortic arch and aortoesophageal fistula (AEF) are reported to warn of this lethal complication of double aortic arch and to stress important points in the diagnosis and management. A review of the records of 30 children with double aortic arch disclosed two patients who had AEF. The first patient had respiratory distress and repair of a vascular ring (double aortic arch) at 5 weeks of age. At 9 weeks of age, because of difficulty with tracheal extubation, aortopexy was performed. Ten days later, profuse upper gastrointestinal bleeding required control by a Sengstaken-Blakemore (SB) tube. Thoracotomy and repair AEF was accomplished successfully under cardiopulmonary bypass. The second patient had hepatomegaly and Pseudomonas sepsis. Endotracheal and nasogastric intubation was necessary, and subsequently the double aortic arch was demonstrated by magnetic resonance imaging (MRI). On the 48th day of hospitalization, life-threatening upper gastrointestinal hemorrhage required insertion of an SB tube. Cardiopulmonary bypass allowed successful repair of the AEF. Both children are alive, after 3 and 2 years (respectively). These patients demonstrate that AEF must be diagnosed clinically (no imaging technique is effective); its history and physical presentation are typical. The SB tube is effective for controlling the hemorrhage until cardiopulmonary bypass can be performed to allow repair.

Aortoesophageal fistulae due to gunshot wounds: report of two cases with one survivor

We report the cases of two patients who developed aortoesophageal fistulae after sustaining gunshot wounds to the chest. One suddenly exsanguinated 5 hours postinjury while in the angiography suite. The other manifested 4 weeks postinjury while in a rehabilitation hospital for associated spinal cord injury. The diagnosis and management were complicated, but the patient lived. He is the only survivor of aortoesophageal fistula due to gunshot wound that we could find in the literature.

Atrial-esophageal fistula shown by transthoracic echocardiogram

Nontraumatic atrial-esophageal fistula is a catastrophic problem usually diagnosed postmortem and almost invariably fatal. We report the first case of a patient in whom the diagnosis of atrial-esophageal fistula was made from a transthoracic echocardiography antemortem. Echocardiography showed multiple microbubbles in the left atrium and ventricle emanating from the posterior aspect of the left atrium adjacent to the pulmonary veins. The literature is reviewed and the significance of the case and the echocardiogram is discussed.

Aortoesophageal fistula: congenital and acquired causes

Aortoesophageal fistula (AEF) is a rare but frequently lethal cause of upper gastrointestinal bleeding. This is a report of the authors' experience with four cases--two from congenital and two from acquired causes. A review of the pediatric cases reported in the literature is included. The mortality from AEF is high, and can be decreased in two ways. AEF can be prevented by avoiding prolonged nasogastric intubation in patients with known vascular rings, and by promptly removing esophageal foreign bodies and promptly treating periesophageal abscesses. Once an AEF occurs, it presents with typical large-herald upper gastrointestinal bleeding of bright red blood, and cardiovascular collapse. Recognition of this pattern, with vigorous resuscitation and aggressive surgical management, will improve the survival rate.

Staged repair using omentum for posttraumatic aortoesophageal fistula

Aortoesophageal fistulas from traumatic thoracic aortic pseudoaneurysms are almost uniformly fatal. We report a case of a young woman who nearly exsanguinated soon after diagnosis. Immediate operative intervention consisted of prosthetic graft replacement of the pseudoaneurysm and pleural patch coverage. Definitive treatment of the esophageal perforation was necessary later for mediastinal sepsis. Primary repair of the esophagus accompanied by mobilization of the omentum into the space between the esophageal closure and the prosthetic graft led to a successful outcome.

Aortoenteric fistulas. Recognizing a potentially catastrophic cause of gastrointestinal bleeding

Aortoenteric fistulas are a relatively rare but serious cause of massive gastrointestinal hemorrhage. Most occur as a consequence of aortic reconstructive surgery and involve the proximal graft anastomosis. The distal duodenum is the site of bleeding in about three fourths of cases. Most patients have an initial episode of bleeding followed hours to weeks later by catastrophic hemorrhage. Patients with gastrointestinal bleeding who have undergone prior aortic reconstructive surgery should be approached with a great sense of urgency and a high index of suspicion. Endoscopic and radiographic studies can be very helpful, but the absence of abnormalities does not exclude the diagnosis. Exploratory laparotomy is indicated in patients with massive bleeding or those in whom results of other diagnostic studies have been normal. Treatment of aortoenteric fistula is early surgical intervention. Complete excision of the graft is preferred over patching or closing the defect. The mortality rate is essentially 100% without prompt surgical treatment.