- Case Report
- Open Access
The use of a sternothyroid muscle flap to prevent the re-recurrence of a recurrent tracheoesophageal fistula found 10 years after the primary repair
© The Author(s). 2016
Received: 4 July 2016
Accepted: 10 August 2016
Published: 2 September 2016
Recurrent tracheoesophageal fistula (TEF) is still difficult to diagnose and repair. In almost all cases, recurrence appears relatively soon after the primary surgery. We herein describe a case of recurrent TEF that appeared 10 years after the primary repair. At 2 years of age, the patient suffered from mental retardation due to encephalitis and developed a hiatus hernia with gastro-esophageal reflux. He underwent the repair of a hiatus hernia and fundoplication at 3 years of age. However, the hiatus hernia recurred 6 months after the operation. The patient suffered from recurrent pneumonia for 6 years after the appearance of the recurrent hiatus hernia. At 9 years of age, he was hospitalized frequently due to recurrent severe pneumonia. After admission at 9 years of age, an endoscopic study under general anesthesia was performed and revealed subglottic stenosis and a dilated esophagus with a recurrent hiatus hernia. Tracheotomy or laryngotracheal separation was first planned in order to improve his upper airway and facilitate the safer repair of the recurrent hiatus hernia. After laryngotracheal separation, the patient still suffered from severe pneumonia. In addition, a small volume of nutritional supplement was aspirated from the tracheostomy. Thus, recurrent TEF was suspected. Tests using dye under both esophagoscopy and bronchoscopy confirmed recurrent TEF. The fistula recurred in the cervical area because of the elevation of the esophagus due to the recurrent hiatus hernia. The fistula was surgically closed, with a sternothyroid muscle flap to prevent re-recurrence. At 4 months after this operation, the recurrent hiatus hernia was repaired. Thereafter, the patient’s respiratory symptoms showed a dramatic improvement. The patient is now doing well and free from further recurrences of TEF and hiatus hernia at 2 years after the final operation.
Previous studies involving large series of patients have revealed that recurrent tracheoesophageal fistulas (TEFs) occur in 6–16 % of patients who undergo esophageal atresia (EA)/TEF repair, typically in the first year of life [1–8].
Various factors are implicated in the formation of recurrent TEFs. Recurrence is more likely to occur in patients with anastomotic leakage [3, 5, 6, 8]. Esophageal perforation during the dilatation of an anastomotic stricture is another risk factor for the recurrence of TEF [5, 6, 8]. In addition, when magnified by poor esophageal peristalsis, gastro-esophageal reflux (GER) may contribute to the recurrence of TEF, because it causes the upper esophagus to have prolonged acid contact.
Reoperation for recurrent TEF usually includes the interposition of adjacent soft tissue [5, 6]. Several authors have reported the effects of the interposition of viable tissue, as a flap, between the suture lines of the trachea and esophagus to prevent further recurrence in patients with recurrent TEF [9, 10]. We experienced a rare case in which a TEF recurred in the cervical area on the 10th year after the primary repair. In this case, we chose the sternothyroid muscle flap because it was easy to harvest and because it has been shown to be reliable in the repair of fistulas that recur in the cervical area. Based on our experience of this case, we reviewed and discuss the pathogenesis and the diagnosis of the recurrent TEF and the effectiveness of the sternothyroid muscle flap for preventing further recurrence.
A 9-year-old boy had presented with frequent pneumonia. He was born vaginally at 25 weeks and 6 days at home due to an unknown reason. His birth weight was 750 g. He was in cardiopulmonary arrest when he arrived at the previous hospital. Resuscitation was performed immediately on arrival. Peritoneal drainage was performed because gastric perforation was found soon after resuscitation. Thereafter, a diagnosis of TEF was made, and gastrostomy was created in the previous hospital. He was transferred to our institution at 28 days of age. He was diagnosed as having an EA with a distal TEF (Gross C), and the primary repair of the EA with fistula division was performed at our hospital when he was 5 months of age. The postoperative course was uneventful, and gastrostomy was closed at 10 months of age. He discharged at 2 year of age. After his discharge, severe epilepsy and encephalopathy due to encephalitis occurred, and he became disabled with severe mental retardation at the age of 2. He could not feed orally. At the age of 3, he underwent Nissen fundoplication and re-gastrostomy because of gastroesophageal reflux and hiatus hernia. At the time of the operation, subglottic stenosis was suspected because he could only be intubated with a tracheal tube of 2.5 mm in diameter.
Six months after fundoplication, a recurrence of hiatus hernia was found, which involved the herniation of the stomach and small and large intestine into the thoracic cavity. A reoperation to repair the herniation was not performed because the patient had been in stable condition. However, he had been suffering from recurrent respiratory tract infections since he was 7 years of age. In addition, severe bronchial asthma worsened his respiratory symptoms. At 9 years of age, he was referred to our hospital again because of frequent pneumonia.
We experienced a relatively rare case of recurrent TEF that was found 10 years after the initial repair. We herein discuss the reason why the recurrent TEF had not been identified and the surgical technique that we used to repair the patient’s recurrent TEF.
The patient had subglottic stenosis, which made it difficult to observe the trachea. In addition to the subglottic stenosis, both bronchial asthma and recurrent hiatus hernia were thought to have caused the patient’s respiratory symptoms due to frequent pneumonia. These factors may have caused the patient’s recurrent TEF to remain unidentified. Recurrence was first suspected when a small volume of nutritional supplement that had been administered via gastrostomy was aspirated from the tracheostomy tube after the laryngotracheal separation. In general, although many cases of recurrent TEF are diagnosed by a contrast study, some require further examination by endoscopy with or without a dye test [5, 6, 8, 11]. In the present case, bronchoscopy (which is safer and precise) was not possible prior to tracheostomy due to the patient’s subglottic stenosis. As shown in Fig. 2, esophagoscopy and bronchoscopy combined with a dye test enabled us to diagnose the recurrent TEF.
In general, almost all patients with recurrent TEF have episodes of leakage and/or tracheal injuries [4–6, 8]. The recurrent fistula usually opens in the trachea at the site of the original fistula site or tracheal injury [4–6]. In this case, there was no leakage or tracheal injury at the site of the primary repair. In contrast with other cases, the site of recurrence was found to be high in the cervical area. Thus, we suspected that the patient had both proximal and distal tracheoesophageal fistula (gross type D), and the upper pouch fistula was missed in the primary operation [12, 13]. However, as shown in Fig. 2, a pit was identified just beside the anastomotic line. The anastomotic line in the esophagus had shifted to the cervical area because of the recurrent hiatus hernia. We therefore judged that the original fistula (proximal tracheoesophageal fistula of gross type D) in the upper pouch was not found at this time. We also suspected that the trachea had been injured during laryngotracheal separation. However, during the repair of the recurrent TEF, the fistula was found to be located in an area that had not been touched during the laryngotracheal separation. Based on the above-noted findings, we diagnosed the patient with recurrent TEF.
In the present case, the TEF might have recurred at the age of 9, when the patient started suffering from frequent and severe pneumonia. The recurrent hiatus hernia caused GER and the poor clearance of refluxed gastric juice in the esophagus. Prolonged acid contact causing inflammation and erosion around the anastomotic site is thought to have been important in the pathogenesis of TEF in the present case.
There are several options for repairing recurrent TEF. Endoscopic techniques using adhesives have been presented [14–16]. This method is reported to be effective when the fistula tract is first de-epithelialized using several types of devices and then fibrin glue or a similar agent is injected into the tract of the fistula [5, 14–16]. However, it is thought that this technique would have been difficult in the present case because the tract was not detected clearly and because it was not possible to place a catheter under endoscopy. We therefore opted for open surgical closure. The placement of viable tissue between the suture lines may help to prevent the further recurrence of TEF [5, 6, 9, 10]. Previous studies have described the use of the pericardium, pleura, intercostal flap, cervical muscle flap, cartilage, and lymph nodes for this purpose [5, 6, 9, 10]. The flap can be harvested from the same surgical site with its own blood supply. In the present case, a sternothyroid muscle flap was chosen because the recurrent fistula was in the cervical area. In fact, in the present case, the muscle flap was easily and safely interposed between the divided ends of the fistula with a good blood supply. Based on our experience, the interposition of a muscle flap using the sternothyroid muscle is thought to be a good option for reoperation to repair a recurrent TEF in the cervical area.
In summary, we described a case of recurrent TEF that was found 10 years after the initial surgery. The recurrent fistula was located in the cervical area, which was an unusual area for a TEF to recur. It is important to suspect recurrent TEF when a patient repeatedly suffers from respiratory infections because TEFs may recur long after the primary repair, as we reported in our case. The definitive diagnosis of recurrent TEF, which was made by dye test under endoscopy, helped us to perform an accurate repair. In addition, as shown in this report, the usage of a sternothyroid muscle flap as an interposition material between the esophagus and trachea was thought to have been an effective approach for preventing the further recurrence of TEF.
HT and KM participated in the patient’s care, research design, performance of the research, and writing of the paper. MI, TS, and KO participated in the patient’s care and data collection. KM participated in revising the manuscript critically. All authors read and approved the final manuscript.
Kouji Masumoto is the professor; Miki Ishikawa Takato Sasaki and Kentaro Ono are trainees; Hajime Takayasu is a staff surgeon at the Department of Pediatric Surgery, University of Tsukuba.
The authors declare that they have no competing interests.
Consent for publication
Written informed consent was obtained from the patient’s parents for publication of this case report and any accompanying images. A copy of the written consent is available for review by the Editor-in-Chief of this journal.
This case report has been approved by the ethics committee of Tsukuba University.
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