Pharyngocutaneous fistula

Delayed oral feeding reduces pharyngocutaneous fistula formation after open surgical treatment of primary hypopharyngeal cancer: A case-control study

OBJECTIVES

Pharyngocutaneous fistula (PCF) formation following open surgical treatment of hypopharyngeal cancer (HPC) is a common and troublesome complication. To date, the postoperative protocol of restarting oral intake is not clear, and vast discrepancies exist in the literature and among institutions. This study aimed to explore the impact of a postoperative protocol of restarting oral intake on PCF formation after open surgical treatment of primary HPC, and its impact on overall survival (OS) and swallowing function based on the functional outcome swallowing scale (FOSS).

MATERIALS AND METHODS

This was a prospective observational study of 42 patients who received open surgical treatment for primary HPC at Beijing Friendship Hospital between April 2019 and August 2021. This cohort included two groups: patients who restarted oral intake on the 10th postoperative day (Group 1), and those who started on the 20th (Group 2). The Chi-square test and Fisher's exact chi-squared test were used for comparing qualitative data among the groups.

RESULTS

Group 1 (n = 27) and Group 2 (n = 15) were comparable in clinical characteristics. PCF occurred in 7 (25.9%) patients in Group 1, while none occurred in Group 2 (P = 0.038). The 2-year OS of all 42 patients was 75.6%; 65.8% and 93.3% for Groups 1 and 2, respectively (P = 0.07). The swallowing function was satisfactory (FOSS Grades 0-III) for 19 (70.4%) patients in Group 1 and 15 (100%) patients in Group 2 (P = 0.035). Laryngeal preservation was achieved in 25 (59.5%) patients, while decannulation was successful in 22 (88.0%) patients.

CONCLUSIONS

Delayed oral feeding significantly reduces PCF after open surgical treatment of primary HPC, and improves the swallowing function outcome without jeopardizing the OS.

Thunderbeat®: a new step forward in transoral surgery-systematic review of literature and our experience

INTRODUCTION

Minimally invasive surgery is today the main challenge of ENT surgeons who aim to achieve oncological radicality with less aesthetic and functional impact. This is the basis for the widespread transoral surgical techniques, as the Thunderbeat^®.

OBJECTIVE

To date, the use of Thunderbeat^® in transoral surgery is still little known and widespread. So, this study analyzes, with a systematic review, current literature about the transoral use of Thunderbeat^® and shows our case studies.

METHODS

The research was carried out on Pubmed, Scopus, Web of Science and Cochrane databases using specific keywords. Then, a retrospective study was carried out on 10 patients who underwent transoral surgery by Thunderbeat^® in our ENT Clinic. Both in our cases and in the systematic review the following parameters have been evaluated: treated anatomical site and subsite, histological diagnosis, type of surgery, duration of nasogastric tube and hospitalization, post-operative complications, tracheostomy, resection margin status.

RESULTS

The review included 3 articles that described transoral use of Thunderbeat^® for a total of 31 patients suffering from oropharyngeal, hypopharyngeal and/or laryngeal carcinoma. Nasogastric tube was removed after 21.5 days on average, temporary tracheostomy was performed in 6 patients. The main complications were: bleeding (12.90%) and pharyngocutaneous fistula (29.03%). Thunderbeat^® shaft was 35 cm long and 5 mm large. Our case studies included 5 males and 5 females, mean age 64.4 ± 10.28, with oropharyngeal or supraglottic carcinoma, parapharyngeal pleomorphic adenoma and cavernous hemangioma of the tongue base. Temporary tracheostomy was performed in 8 patients. Free resection margins were achieved in all cases (100%). No peri-operative complications occurred. Nasogastric tube was removed after 5.3 ± 2 days on average. All patients were discharged without tracheal tube and NGT after 18.2 ± 4.72 days on average.

CONCLUSION

This study demonstrated that Thunderbeat^® has several advantages over other transoral surgical approaches, such as CO2 laser and robotic surgery, in terms of best combination of oncological and functional success, less post-operative complications and costs. So, it could represent a step forward in transoral surgery.

The effect of botulinum neurotoxin A on soft-tissue complications in intraoral reconstructions

BACKGROUND

Intraoral reconstruction has become more common in recent years. Patients may suffer from complications because of hypersalivation. This issue can be overcome with an aid aimed at reducing saliva production. In this study, patients who underwent flap reconstruction were examined. The aim was to compare the complication rates between those who were administered with botulinum neurotoxin type A (BTXA) to the salivary glands before the reconstruction and those who were not.

METHODS

Patients who underwent flap reconstruction between January 2015 and January 2021 were included in the study. The patients were divided into 2 groups. BTXA was applied to the parotid and submandibular glands in the 1st group at least 8 days before the operation to reduce the salivary secretion. BTXA application was not applied to the patients in the 2nd group before the operation.

RESULTS

A total of 35 patients were included in the study. There were 19 patients in group 1 and 16 patients in group 2. The tumor type in both groups was squamous cell carcinoma. For patients in the 1st group, salivary secretion decreased in an average of 3.84 days. In the statistical analysis, no significant difference was found between the groups in terms of age, comorbidity, smoking-complication development, and comorbidity-complication development. When infection was excluded, there was a significant difference in the development of complications between the groups.

CONCLUSIONS

BTXA application before the operation is beneficial to minimize complications in patients who plan to undergo elective intraoral reconstruction.

The Management of Salivary Fistulas

Postoperative salivary fistula is an especially undesirable complication because it can be difficult to address, may delay postoperative radiation, and always delays enteral nutrition. Patients who are malnourished, have already undergone radiotherapy, or are hypothyroid are at higher risk of developing this problem. Conservative measures work in most patients, but a significant percentage of patients require intervention beyond pressure dressings and tincture of time. Medications, hyperbaric oxygen therapy, and surgical intervention may be required when fistulas do not heal in a timely manner. Decisions about the approach and timing of more aggressive interventions are part of the art of medicine since definitive scientific protocols are lacking.

Cone beam computed tomography with oral contrast for accurate diagnosis and surgical planning of pharyngeal leakage and fistula: a case series

OBJECTIVE

Pharyngocutaneous fistula is one of the severe complications related to head and neck surgeries. Detecting the accurate three-dimensional location of both the fistula and leakage is essential for surgical treatment. Videofluoroscopy is usually used for locating these; however, its imaging is two-dimensional. We evaluated pharyngeal leakage and fistulae using Cone Beam Computed Tomography (CBCT), known for its three-dimensional high spatial resolution imaging, taken in a sitting position, with oral contrast (contrast CBCT).

METHODS

Pharyngeal leakage and fistulae were evaluated in a total of 31 subjects by sequentially performing videofluoroscopy and contrast CBCT. The detection accuracy of videofluoroscopy and contrast CBCT for leakage and fistula, as well as the ability to determine the extent and depth for surgical planning, were investigated and compared.

RESULTS

Videofluoroscopy and contrast CBCT showed suspicious leakage and/or fistula in six and three of the 31 subjects, respectively. Surgical findings revealed the presence of leakage and/or fistula in three of the 31 subjects. The positive predictive values of videofluoroscopy and contrast CBCT were 50% (3/6) and 100% (3/3), respectively. Contrast CBCT provided more precise images, showing the extent and depth of leakage and fistula in three-dimensions.

CONCLUSION

The present study's results indicate the usefulness of contrast CBCT in terms of accurate diagnosis of leakage and fistula, due to its three-dimensional imaging being performed with the patient in a sitting position.

LEVEL OF EVIDENCE: 4

Botulinum Neurotoxin A in the Treatment of Pharyngocutaneous Fistula after Salvage Surgery in Head and Neck Cancer Patients: Our Preliminary Results

Objective: To analyze the effect of intraparotid injection of botulinum neurotoxin A (BoNT-A) on salivary production and the course of pharyngocutaneous fistula (PCF) in post-radiation therapy salvage surgery. Methods: A total of 13 patients who had undergone total laryngectomy or pharyngolaryngectomy were treated with BoNT-A to both parotid glands, within three days from PCF onset. The salivary flow was evaluated using a subjective rating scale as the percentage of normal function from 0% (no saliva) to 100% (normal saliva flow), before injection, every day for 2 weeks, and once a week for three months. PCFs were monitored daily. Results: Spontaneous closure of PCF occurred in 7/13 (53.84%) cases 13.6 days (range: 7-18) after treatment; 6/13 (46.16%) patients needed revision surgery. Salivary flow significantly decreased in all patients seven days after injection (from 67.2% to 36.4%; p < 0.05). Patients who had undergone either conservative or surgical treatment did not differ in salivary flow before injection, whereas the mean percentages of salivary flow calculated at each time point after injection were different (p < 0.05). Conclusions: BoNT-A contributed to the closure of the fistula in most of our cases. The subjective perception of salivary flow predicted the closure of PCF. The mean time to closure may contribute to establishing the timing of PCF surgical treatment.

Non-Surgical Strategies for Assisting Closure of Pharyngocutaneous Fistula after Total Laryngectomy: A Systematic Review of the Literature

Background: Pharyngocutaneous fistula (PCF) is a frequent complication after total laryngectomy, with an incidence of up to 65%. Many conservative or invasive approaches are available and the choice among them is usually made on a case-by-case basis. The aim of the present review is to critically summarize the available evidence of the effectiveness of the non-surgical management of PCF. Methods: A systematic review and a meta-analysis of the literature were conducted, according to the PRISMA guidelines. Studies investigating botulinum toxin therapy, scopolamine transdermal patch, hyperbaric oxygen therapy (HBOT), and negative pressure wound therapy (NPWT) were assessed. Complete fistula closure after the initiation of non-surgical treatment was the main outcome. Results: After the application of selection criteria, a total of seven articles and 27 patients were included in the present review. All the eligible studies were descriptive case series, while only one article used a standard group as a comparison. The mean age was 63.3 and 14 patients (51.9%) had previously received RT. The reported comorbidities were diabetes, ischemic heart disease, hypertension, dyslipidemia, COPD, and atrial fibrillation. With a mean healing time of 25.0 days, the overall success rate was 92.6%. Conclusions: Non-surgical treatment of PCF is only based on the experience of small series. Although success rates seem promising, the absence of properly designed comparative studies does not allow us, at present, to identify ideal candidates for these non-invasive management strategies for PCF.

Development of Pharyngocutaneous Fistula after Total Laryngectomy: The Predictive Value of C-reactive Protein/Albumin Ratio

BACKGROUND

We aimed to evaluate whether C-reactive protein(CRP)/ Albumin ratio (CAR) performed in the early postoperative period after total laryngectomy could be a predictive factor for the development of pharyngocutaneous fistula (PCF).

METHODS

The files of patients with laryngeal squamous cell carcinoma who underwent total laryngectomy between January 2005 and January 2019 were retrospectively reviewed. Patients were divided into two groups: patients with PCF (PCF group) and without (Non-PCF group). CAR values and risk factors were compared between groups.

RESULTS

The overall incidence of PCF was 23.2%. There was a statistically significant difference between the two groups in terms of CRP and CAR levels (p = 0.001). The CAR value of 27.05 (sensitivity = 75.0% , specificity 68.2%, area under curve (AUC) = 0.742, 95% confidence interval 0.616-0.868) was determined as a cutoff value to describe the development of fistula in the early postoperative period. In multiple linear regression analysis, there was an independent relationship between presence of PCF and previous RT and CAR value.

CONCLUSIONS

CAR, performed in the early postoperative period, may be a new and useful marker for predicting PCF after total laryngectomy.

Preemptive Utilization of Anterior Belly of the Digastric Muscle Flaps in Transoral Robotic Radical Tonsillectomy

Objective

To demonstrate the use of an anterior belly of the digastric muscle flap (ABDMF) during transoral robotic radical tonsillectomy (TORRT) with concomitant neck dissection with the intent of preventing the formation of postoperative pharyngocutaneous fistulas.

Study Design

Retrospective study.

Setting

Single academic tertiary care center.

Methods

In this study, all patients were included who underwent TORRT plus limited pharyngectomy with concomitant neck dissection and ABDMF for the treatment of oropharyngeal squamous cell carcinoma between September 2012 and September 2020. The rate of fistula formation was assessed in patients with preemptive utilization of ABDMF.

Results

A total of 43 patients underwent TORRT with neck dissection and ABDMF. No patients developed a fistula in the postoperative period or associated morbidity with the use of this flap.

Conclusion

Preemptive use of ABDMF in TORRT with concomitant neck dissection represents a reconstructive option that may help prevent the formation of pharyngocutaneous fistula by reinforcing the posteroinferior boundary of the parapharyngeal space.

Modified vacuum-assisted closure (EndoVAC) therapy for treatment of pharyngocutaneous fistula: Case series and a review of the literature

BACKGROUND

Pharyngocutaneous fistula is a potential life-threatening complication following head and neck surgery. There is only limited evidence about the efficacy of vacuum-assisted closure (VAC) therapy and endoscopic vacuum-assisted closure (EndoVAC) therapy for the treatment of pharyngocutaneous fistulas.

METHODS

In this article, we report on a consecutive case series of six male patients with pharyngocutaneous fistula treated with a modified outside-in EndoVAC technique. We also present a review of the current related literature.

RESULTS

EndoVAC therapy alone was successful in five of the six patients (83.3%) with a median duration of EndoVAC therapy of 18.5 days (range: 7 to 32 days) and a median number of EndoVAC sponge changes of 4 (range: 1 to 9 changes). One patient needed additional reconstructive surgery after prior radiochemotherapy and jejunal transfer. No treatment-related complications were observed.

CONCLUSION

EndoVAC therapy is an easy-to-perform, safe procedure for the treatment of pharyngocutaneous fistulae.

Selective embolization of lingual artery in transoral robotic surgery for the management of recurrent base of tongue carcinomas

BACKGROUND

The incidence of oropharyngeal carcinoma has been on the rise in recent decades. About 30% of patients who undergo definitive chemoradiation as the initial treatment present with residual/recurrent disease. In such a situation, surgical salvage either in the form of traditional open surgery or transoral robotic surgery (TORS) remains a viable treatment option. However, the extensive vascular supply of the posterior tongue and tonsillar bed increases the risk of perioperative bleeding, which is a key concern. The article describes the technique of selective pre-operative embolization to reduce the risk of perioperative bleeding and enumerate its advantages in providing a bloodless field during surgery.

METHODS

Prospective study of 5 patients with recurrent or residual midline BOT tumours who underwent TORS after selective lingual artery embolization at our centre.

RESULTS AND CONCLUSIONS

None of the patients had any major perioperative bleeding or post procedural complications. All the patients after TORS had their tongue vascularity preserved with adequate recovery of tongue functions. Selective embolization of the feeder vessels provides a favorable bloodless surgical field without affecting the vascular integrity of the remnant tongue. This added advantage helps restoring the normal oral phase of swallowing.

Application of the Supraclavicular Artery Island Flap for Fistulas in Patients With Laryngopharyngeal Cancer With Prior Radiotherapy

OBJECTIVE

To evaluate the effect of the supraclavicular artery island flap (SAIF) in reconstructing pharyngocutaneous fistula in patients with laryngopharyngeal cancer with prior radiotherapy.

METHODS

Six patients with laryngopharyngeal cancer with pharyngocutaneous fistula due to previous radiotherapy and surgery during 2016 to 2019 were retrospectively analyzed. Initially, the fistula was treated conservatively. The SAIF was applied with double folding technique to reconstruct fistula in the patients who failed to heal after conservative treatment.

RESULTS

The fistulae closed in 4 patients after conservative treatment. After SAIF operation, fistula closure was achieved in the other 2 patients who received highest dose of radiation and had largest fistulae size. The flaps grew well and there were no donor-site complications in these 2 patients. All patients achieved oral feeding without any complications.

CONCLUSION

The SAIF is an effective and safe approach to reconstruct the pharyngocutaneous fistula after laryngopharyngeal surgery in patients with laryngopharyngeal cancer with previous radiotherapy, especially for those who have received high-dose radiation and have large fistula.

Treatment Principle Based on the Clinical Staging of Pharyngocutaneous Fistula

Objective

Studies on factors affecting pharyngocutaneous fistulas (PCFs) and PCF repair methods have been widely reported. However, the healing phases of PCF are unclear, and their elucidation could guide clinical treatment.

Methods

Clinical stages of the PCF healing process were identified by a retrospective study of 39 patients with head and neck cancer who developed a PCF.

Results

Different conservative treatments were performed in turn according to three defined stages of the PCF healing process: stage I (drainage and debriding period), stage II (pressure dressing period), and stage III (healing period). A 7-day course of antibiotic therapy was only performed in stage I in 23 patients. The PCF was cured in 30 (76.9%) of 39 patients; the remaining 9 patients underwent subsequent surgical interventions for PCF healing.

Conclusion

The three stages of PCF healing have a certain reference value in guiding clinical treatments. Moreover, antibiotics should be used in stage I when signs of infection are present, but they should not be used in all three phases of conservative treatment.

Endoscopic Dilation of Refractory Postlaryngectomy Strictures: A Case Series and Literature Review

Background

Endoscopic dilation of postlaryngectomy strictures (PLS) is safe and effective; however, PLS are often refractory and require serial dilations. Long-term outcomes of dilation in patients with refractory PLS are not well reported.

Materials and Methods

Seven patients with dysphagia and refractory PLS underwent serial endoscopic dilation therapy during a 4.5-year period. Dilation characteristics, technical success, clinical success, and diet advancement (as assessed by Diet/GT scale) were measured. Results. All strictures were complex, and there were no reported complications. The median number of dilations per patient was 12 (range 7 to 48). The average interval in between dilations was six weeks. Technical success was achieved in 6/7 patients, and clinical success was achieved in 2/7 patients. 6/7 patients had advancements in Diet/GT scores.

Conclusions

Dilation of refractory PLS is safe and effective and frequently requires the use of a retrograde approach, fluoroscopic guidance, and/or lumen patency strings. Serial dilations are required to maintain luminal patency, relieve dysphagia, and advance oral diet. The definition of clinical success of dilation in these patients should avoid the use of a specific time interval between dilations to characterize success.

Bradykinin Receptor B1 and C-Reactive Protein as Prognostic Factors for Pharyngocutaneous Fistula Development After Laryngectomy

Pharyngocutaneous fistulae (PCF) are one of the most common complications after laryngectomy. Predisposing risk factors have been studied, yet knowledge to determine which patients are prone to developing a fistula remains scarce. This study aims to establish prognostic parameters to identify individual patients at risk for PCF development. As PCF and inflammation seem to be interwoven, this work focuses on markers able to detect an inflammatory response. We retrospectively analyzed all patients who had undergone a laryngectomy at our clinic in the years 2007 to 2017 (n = 182). Immunohistochemical expression of bradykinin type 1 and 2 receptor and vascular endothelial growth factor receptor 2 was studied in all available tumor samples. Additionally, the clinical inflammation parameters 'body temperature', 'pain', 'c-reactive protein (CRP)', and 'leucocytes' were postoperatively tracked in all patients. The times between fistula diagnosis, therapeutic approach, and hospital discharge were recorded. We found a strong correlation between inflammation and the formation of a fistula. High bradykinin 1 receptor expression in the tumor samples correlated with postoperative PCF development. Persistently elevated CRP and leukocyte levels beyond the 6th postoperative day were also risk factors. A decreased time lapse between PCF diagnosis and surgical revision clearly correlated with a shorter hospital stay. In this study, we identified a bradykinin 1 receptor positive patient group at high risk for development of PCF. We recommend close monitoring for fistula formation in these patients to ensure timely intervention.

Ultrasonographic swallowing examination for early detection of neopharyngeal fistula after salvage total laryngectomy: A preliminary study

BACKGROUND

The current study investigated the feasibility of ultrasonographic swallowing examination (USSE) for the evaluation of neopharynx and early detection of neopharyngeal fistula after salvage total laryngectomy.

METHODS

A prospective case series-based study involving 16 patients who underwent salvage total laryngectomy was conducted. USSE was performed on postoperative days 5-7, and oral diet initiation was determined based on the USSE results.

RESULTS

Fistula of the neopharynx was detected in four patients (25%) via USSE, as was the specific site of the fistula. In these patients, oral diet was delayed and immediate interventions including ultrasound-guided fluid aspiration and compression dressing were applied, and all fistulas were subsequently closed. In the remaining 12 patients with no neopharyngeal fistula on USSE, an oral diet was started immediately and no fistula occurred.

CONCLUSIONS

USSE is a promising method for neopharynx evaluation and early detection of neopharyngeal fistula after salvage total laryngectomy.

Incorporating a continuous suction system as a preventive measure against fistula-related complications in head and neck reconstructive surgery

Background

Although previous studies have focused on determining prognostic and causative variables associated with fistula-related complications after head and neck reconstructive surgery, only a few studies have addressed preventive measures. Noting that pooled saliva complicates wound healing and precipitates fistula-related complications, we devised a continuous suction system to remove saliva during early postoperative recovery.

Methods

A continuous suction system was implemented in 20 patients after head and neck reconstructive surgery between January 2012 and October 2017. This group was compared to a control group of 16 patients at the same institution. The system was placed orally when the lesion was on the anterior side of the retromolar trigone area, and when glossectomy or resection of the mouth floor was performed. When the orohypopharynx and/or larynx were eradicated, the irrigation system was placed in the pharyngeal area.

Results

The mean follow-up period was 9.2±2.4 months. The Hemovac system was applied for an average of 7.5 days. On average, 6.5 days were needed for the net drain output to fall below 10 mL. Complications were analyzed according to their causes and rates. A fistula occurred in two cases in the suction group. Compared to the control group, a significant difference was noted in the surgical site infection rate (P<0.031).

Conclusions

Clinical observations showed reduced saliva pooling and a reduction in the infection rate. This resulted in improved wound healing through the application of a continuous suction system.

Risk Factors of and Treatments for Pharyngocutaneous Fistula Occurring after Oropharynx and Hypopharynx Reconstruction

Background

A pharyngocutaneous fistula is a common and difficult-to-manage complication after head and neck reconstruction. It can lead to serious complications such as flap failure, carotid artery rupture, and pharyngeal stricture, and may require additional surgery. Previous radiotherapy, a low serum albumin level, and a higher T stage have been proposed as contributing factors. We aimed to clarify the risk factors for pharyngocutaneous fistula in patients who underwent flap reconstruction and to describe our experiences in treating pharyngocutaneous fistula.

Methods

Squamous cell carcinoma cases that underwent flap reconstruction after cancer resection from 1995 to 2013 were analyzed retrospectively. We investigated several significant clinical risk factors. The treatment modality was selected according to the size of the fistula and the state of the surrounding tissue, with options including conservative management, direct closure, flap surgery, and pharyngostoma formation.

Results

A total of 127 cases (18 with fistulae) were analyzed. A higher T stage (P=0.048) and tube-type reconstruction (P=0.007) increased fistula incidence; other factors did not show statistical significance (P>0.05). Two cases were treated with conservative management, 1 case with direct closure, 4 cases with immediate reconstruction using a pectoralis major musculocutaneous flap, and 11 cases with direct closure (4 cases) or additional flap surgery (7 cases) after pharyngostoma formation.

Conclusions

Pharyngocutaneous fistula requires global management from prevention to treatment. In cases of advanced-stage cancer and tube-type reconstruction, a more cautious approach should be employed. Once it occurs, an accurate diagnosis of the fistula and a thorough assessment of the surrounding tissue are necessary, and aggressive treatment should be implemented in order to ensure satisfactory long-term results.

Salivary fistula: Blue dye testing as part of an algorithm for early diagnosis

Objective

Orocutaneous and pharyngocutaneous fistula (OPCF) is a debilitating complication of head and neck surgery for squamous cell carcinoma (SCC), resulting in delayed adjuvant treatment and prolonged hospitalization. As yet, there is no established test that can help in prompt and accurate diagnosis of OPCF. This study aims to determine the accuracy of bedside blue dye testing and its role as part of an algorithm for early diagnosis. We also analyze the risk factors predisposing to OPCF.

Study Design

Retrospective cohort study from 2012 to 2014.

Methods

Patients with head and neck SCC who underwent major resection and reconstruction, at risk of OPCF, were included. Results of blue‐dye and video‐fluoroscopic swallow‐studies (VFSS) testing for OPCF were recorded. For the patients that were noted to develop OPCF, the length of time to diagnosis of fistula and subsequent mode of management were examined.

Results

Of the 93 patients in this study, 25 (26.9%) developed OPCF. Advanced T‐classification (T3/T4) was the only significant predisposing risk factor (p = 0.013). The sensitivity and specificity of the bedside blue dye testing was found to be 36.4% and 100%, respectively. The test positive patients were diagnosed with OPCF at a median of postoperative day (POD) 9.5 as compared to POD 13 for the test negative patients (p = 0.001). Early diagnosis was associated with faster fistula resolution with treatment.

Conclusion

Blue dye testing is a simple bedside test that can assist in the early diagnosis of OPCF in patients, allowing treatment to be instituted earlier with improved outcomes.

Level of Evidence

3

Guidelines for the Surgical Management of Laryngeal Cancer: Korean Society of Thyroid-Head and Neck Surgery

Korean Society of Thyroid-Head and Neck Surgery appointed a Task Force to develop clinical practice guidelines for the surgical treatment of laryngeal cancer. This Task Force conducted a systematic search of the EMBASE, MEDLINE, Cochrane Library, and KoreaMed databases to identify relevant articles, using search terms selected according to the key questions. Evidence-based recommendations were then created on the basis of these articles. An external expert review and Delphi questionnaire were applied to reach consensus regarding the recommendations. The resulting guidelines focus on the surgical treatment of laryngeal cancer with the assumption that surgery is the selected treatment modality after a multidisciplinary discussion in any context. These guidelines do not, therefore, address non-surgical treatment such as radiation therapy or chemotherapy. The committee developed 62 evidence-based recommendations in 32 categories intended to assist clinicians during management of patients with laryngeal cancer and patients with laryngeal cancer, and counselors and health policy-makers.

Do salivary bypass tubes lower the incidence of pharyngocutaneous fistula following total laryngectomy? A retrospective analysis of predictive factors using multivariate analysis

Salivary bypass tubes (SBT) are increasingly used to prevent pharyngocutaneous fistula (PCF) following laryngectomy and pharyngolaryngectomy. There is minimal evidence as to their efficacy and literature is limited. The aim of the study was to determine if SBT prevent PCF. The study was a multicentre retrospective case control series (level of evidence 3b). Patients who underwent laryngectomy or pharyngolaryngectomy for cancer or following cancer treatment between 2011 and 2014 were included in the study. The primary outcome was development of a PCF. Other variables recorded were age, sex, prior radiotherapy or chemoradiotherapy, prior tracheostomy, type of procedure, concurrent neck dissection, use of flap reconstruction, use of prophylactic antibiotics, the suture material used for the anastomosis, tumour T stage, histological margins, day one post-operative haemoglobin and whether a salivary bypass tube was used. Univariate and multivariate analysis were performed. A total of 199 patients were included and 24 received salivary bypass tubes. Fistula rates were 8.3% in the SBT group (2/24) and 24.6% in the control group (43/175). This was not statistically significant on univariate (p value 0.115) or multivariate analysis (p value 0.076). In addition, no other co-variables were found to be significant. No group has proven a benefit of salivary bypass tubes on multivariate analysis. The study was limited by a small case group, variations in tube duration and subjects given a tube may have been identified as high risk of fistula. Further prospective studies are warranted prior to recommendation of salivary bypass tubes following laryngectomy.

Repair of a large pharyngocutaneous fistula with a free jejunal patch flap after salvage laryngectomy: A case report

Preoperative chemoradiation therapy increases the risk of pharyngocutaneous fistula (PCF) after laryngectomy. In this report, we describe the use of a free jejunal patch flap and a deltopectoral flap for surgical treatment of a large PCF. A 52-year-old man underwent salvage laryngectomy and right neck dissection after concurrent radiotherapy for laryngeal carcinoma. On postoperative day 5, a pharyngeal fistula and neck abscess occurred with the right internal jugular vein thrombosis. We sutured the pharyngeal mucosa to the cervical skin to avoid carotid artery exposure, and we also ligated the right internal jugular vein. The PCF developed afterwards. The patient was being fed through a nasogastric tube and the fistula had increased in size. At the time of surgery, the external orifice became 5 cm × 5 cm in size. We performed the repair with a free jejunal patch flap and a deltopectoral flap. The harvested jejunum was opened along its antimesenteric border to design a sufficient free jejunal flap to cover the large PCF. A deltopectoral pedicled flap was used to reconstruct the neck skin defect to resurface the free jejunal patch flap. Both flaps survived. The patient could resume an oral diet 2 weeks after surgery. At 1 month after surgery, the skin pedicle of the deltopectoral flap was divided. There was no contracture or stricture 3 years after surgery and he maintained a regular diet. Reconstruction with a free jejunal patch flap and a deltopectoral flap may be a suitable method for repair of a large PCF. © 2014 Wiley Periodicals, Inc. Microsurgery 37:61-65, 2017.

Comparison of complication rates associated with stapling and traditional suture closure after total laryngectomy for advanced cancer

We conducted a retrospective, matched-cohort, case-control study to compare complication rates associated with two wound closure procedures-stapling vs. traditional hand suturing-following total laryngectomy. Our study population was made up of 42 consecutively presenting patients-38 men and 4 women, aged 34 to 92 years (mean: 60.3) whose pharyngotomies were amenable to primary closure. Of this group, 37 patients had active endolaryngeal squamous cell carcinoma (SCC), 2 patients had inactive endolaryngeal SCC, 2 patients had thyroid cancer, and 1 patient had been treated for chronic aspiration. A total of 26 patients (61.9%) had undergone traditional suture closure of the neopharynx (suture group) and 16 patients (38.1%) had undergone closure with a linear stapling device (staple group). Other than the fact that the patients in the staple group were significantly older than those in the suture group (median: 71.0 vs. 56.5 yr, p = 0.002), there were no significant differences between the two groups in terms of comorbidities or cricopharyngeal myotomy, tracheoesophageal puncture, or neck dissection. There was a total of 8 postoperative infections-5 in the staple group (31.3%) and 3 in the suture group (11.5%)-not a statistically significant difference. Fistulas occurred in 4 staple patients (25.0%) and 6 suture patients (23.1%)-again, not statistically significant. We conclude that in appropriately selected patients, primary closure of the neopharynx can be safely and effectively achieved with a linear stapling device.

Tissue transfer to post-chemoradiation salvage laryngectomy defects to prevent pharyngocutaneous fistula: single-centre experience

Background: In recent practice, we have used tissue transfer (pedicled or free flap) to augment the pharyngeal circumference of the neopharynx following salvage total laryngectomy, even in patients who have sufficient pharyngeal mucosa for primary closure. In this study, the rates of pharyngocutaneous fistula were compared in soft tissue flap reconstructed patients versus patients who underwent primary closure. Method: A retrospective assessment was carried out of all patients who had undergone a salvage total laryngectomy between 2000 and 2010. The presence or absence of a pharyngocutaneous fistula was compared in those who received reconstruction closure versus those who received primary closure. Results: The reconstruction closure group (n = 7) had no incidence of pharyngocutaneous fistula, whereas the primary closure group (n = 38) had 10 fistulas, giving pharyngocutaneous fistula rates of 0 per cent versus 26 per cent, respectively. Conclusion: The findings revealed a lower rate of pharyngocutaneous fistula with tissue transfer compared with primary closure of the neopharynx.

Predictive factors for the postlaryngectomy pharyngocutaneous fistula development: systematic review

OBJECTIVE

Pharyngocutaneous fistula is considered one of the major complications in the postoperative period after total laryngectomy/pharyngolaryngectomy, leading to a severe adverse impact for the patient and society. This study aimed to identify all the described pharyngocutaneous fistula predictive factors and risk classifications.

METHODS

Research was conducted to identify all the studies assessing predictive factors and risk classification for pharyngocutaneous fistula development published until April of 2012 (n = 846). The included studies were analyzed and data regarding their identification, methodological quality and results were recorded.

RESULTS

A total of 39 studies were included. The variables consistently reported as associated with fistula development were nutritional deficiency, American Society of Anesthesiologists (ASA) classification, high consumption of alcohol, anemia and hypoalbuminemia, co-morbidities, advanced N stage, location and extent of primary tumor, pre-radiotherapy and pre-chemoradiotherapy treatment, emergency tracheotomy, surgical margin status, surgery's duration, surgeon's experience, local complications of the wound, performance of intraoperative blood transfusion and relationship between nasogastric tube and oral feeding.

CONCLUSION

Several risk factors were associated with pharyngocutaneous fistula formation in the included studies. However, there is still no consensus in the most pertinent selection. Only two classification systems were retrieved and they were not able to accurately predict pharyngocutaneous fistula.

Coated collagen patches for closure of pharyngo-cutaneous fistulas

After laryngectomy or lateral pharyngotomy for treatment of laryngeal or hypopharyngeal cancer the occurrence of a pharyngo-cutaneous fistula is a challenging complication. Especially after previous radiotherapy and expanded surgical resections of mucosa the management is demanding. Besides the prolonged hospital stay, increased treatment costs and reduced quality of life, a delayed adjuvant treatment follows the development of a fistula. Treatment strategies range from conservative procedures comprising parenteral nutrition, antibiotics and local wound care to primary surgical closure or reconstructive tissue transfer. We report three cases of using the fibrin/thrombin-coated collagen patch TachoSil(®) as a solitary or adjuvant strategy in surgical treatment. In one patient primary closure of the fistula was achieved by transoral application of the collagen patch. In the other cases a not tension free primary suture was strengthened by the adjuvant use of TachoSil(®). The healing process was rapid and straightforward in all patients. The use of TachoSil(®) may be indicated in between conservative treatment strategies and reconstructive surgery. After occurrence of a fistula the healing process is intended to be accelerated by primary closure with TachoSil(®) or by sealing of a primary suture.

Risk factors and survival outcomes for patients with anastomotic leakage after surgery for head and neck squamous cell carcinoma

Objectives

This study evaluated the risk factors for anastomotic leakage (AL) and survival outcomes in patients with head and neck squamous cell carcinoma (HNSCC).

Methods

Patients with HNSCC who underwent surgery carrying potential AL from 2003 through 2009 were included in this study. Univariate and multivariate analyses were performed and patient survival was calculated by the Kaplan-Meier method.

Results

Of 232 eligible patients, 25 (10.8%) developed AL. Univariate analyses revealed that primary tumor site, salvage surgery, perineural invasion, radiotherapy, chemotherapy, and blood transfusion were significantly associated with the occurrence of AL (P<0.05). Independent risk factors for AL were salvage surgery and blood transfusion (P<0.01). On univariate analysis, AL was significantly associated with overall (OS) and disease-free survivals (DFS; P<0.05) but not with decreased locoregional control (LRC) rate (P=0.07). The 5-year DFS rate was significantly different between the non-leakage and leakage groups (70.9% vs. 27.7%, P<0.001). Multivariate analysis showed, however, that AL was not an independent variable of LRC, DFS, or OS (P>0.1).

Conclusion

Patients who received salvage surgery and blood transfusion may require careful surveillance for development of AL, which has a tendency toward decreased survival.

Head and neck surgical patients; is it time for a bridle era?

Early enteral feeding is vital for successful outcomes in patients who have undergone open pharyngeal surgery, with nasogastric tube (NGT) feeding being a safe and accepted method of providing enteral nutrition in the short-term. Securing the NGT is key to ensure adequate caloric consumption and avoid the potential complications of re-siting the tube. The aim of this study was to compare the efficacy of utilising an anterior septal suture to a bridle system for NGT fixation. A sheep's head model was used to represent the nasal cavity of post-operative patients and a fine-bore NGT was passed. The NGT was secured with either an anterior septal suture or bridle system. A pulley system of weights was applied until the NGT slipped or snapped. Each weight and condition was investigated five times. The anterior and posterior septum were examined for evidence of damage for each condition. At 5 kg the anterior septal suture allowed the NGT to slip and the tube began to become distorted. At 5.5 kg the anterior septal suture snapped the NGT. In comparison, the bridle system was able to sustain a weight up to 15.5 kg (Fisher's exact test, p = 0.0079). There was no evidence of damage to the anterior or posterior septum for each condition. The bridle system was able to fix the NGT without slippage or damage at higher weights than the anterior septal suture. This suggests there may be potential benefits of stronger NGT fixation with reduced tube damage using bridle systems in patients, but further research is required in this domain.

Management of orocutaneous fistulas using a vacuum-assisted closure system

BACKGROUND

The vacuum-assisted closure (VAC) system has been used to manage complicated wounds. The purpose of this study was to describe a novel technique in using the VAC system for orocutaneous fistulas.

METHODS

A retrospective study was performed on 10 patients treated at the National Cancer Centre, Singapore, who developed postoperative orocutaneous fistulas. Hydrogum dental paste was used as a sealant together with the VAC system to close the fistulas. We used either the RENASYS or VAC ATS system with 50 mm Hg to 125 mm Hg continuous suction.

RESULTS

The 10 patients developed 11 fistulas. The median age of this cohort was 67 years (range, 33-80 years). Nine patients had successful closure of their fistulas with VAC therapy whereas 1 patient had unsuccessful VAC therapy and required flap reconstruction. The median time to fistula closure was 19 days (range, 6-36 days). The median time to radiotherapy after surgery was 46 days (range, 26-62 days).

CONCLUSION

VAC therapy is an effective treatment option for orocutaneous fistulas.

Polymeric implant materials for the reconstruction of tracheal and pharyngeal mucosal defects in head and neck surgery

The existing therapeutical options for the tracheal and pharyngeal reconstruction by use of implant materials are described. Inspite of a multitude of options and the availability of very different materials none of these methods applied for tracheal reconstruction were successfully introduced into the clinical routine. Essential problems are insufficiencies of anastomoses, stenoses, lack of mucociliary clearance and vascularisation. The advances in Tissue Engineering (TE) offer new therapeutical options also in the field of the reconstructive surgery of the trachea. In pharyngeal reconstruction far reaching developments cannot be recognized at the moment which would allow to give a prognosis of their success in clinical application. A new polymeric implant material consisting of multiblock copolymers was applied in our own work which was regarded as a promising material for the reconstruction of the upper aerodigestive tract (ADT) due to its physicochemical characteristics. In order to test this material for applications in the ADT under extreme chemical, enzymatical, bacterial and mechanical conditions we applied it for the reconstruction of a complete defect of the gastric wall in an animal model. In none of the animals tested either gastrointestinal complications or negative systemic events occurred, however, there was a multilayered regeneration of the gastric wall implying a regular structured mucosa.

In future the advanced stem cell technology will allow further progress in the reconstruction of different kind of tissues also in the field of head and neck surgery following the principles of Tissue Engineering.

Utility of the gastro-omental free flap in head and neck reconstruction

PURPOSE OF REVIEW

In the current era of organ-preservation therapies, surgical salvage and reconstruction of defects following ablation of mucosa and soft tissue in the head and neck is extremely challenging because of the toxic effects of chemoradiation and intensive radiotherapy on wounds. The anatomical, physiological and immunological properties of the gastro-omental flap make it an ideal reconstructive technique in head and neck surgery.

RECENT FINDINGS

Several case series published in the past 12 months highlight the utility of this flap in inhospitable wounds and particularly in restoration of circumferential pharyngeal defects. The gastro-omental flap produces satisfactory functional results and morbidity in this group of high-risk patients.

SUMMARY

The gastro-omental free flap provides an alternative to traditional reconstructive techniques that is ideally suited to high-risk complex wounds in the head and neck.

Pharyngocutaneous fistulae following total laryngectomy comparison between manual and mechanical sutures

The extension of the surgery and closure type of the pharynx can be the determinants in the pharyngocutaneous fistula development. The objective of the study is to evaluate the incidence of pharingocutaneous salivary fistulae after total laryngectomies comparing manual and mechanical sutures. The study is designed as non-randomized, prospective clinical study. Sixty patients with squamous cell carcinoma were submitted to total laryngectomies. In 30 cases, the linear stapler (75 mm) closure (surgical technique described in details) and in other 30 cases manual suture was used. The cases of mechanical suture were prospective and consecutive and the cases of manual suture were a review series of patients who underwent a manual suture of pharynx, in the same period of time. The statistical analysis between the two groups concluded that both were comparable. Fistulae incidence was 6.7% (2/30) in the group with the mechanical suture and 36.7% (11/30) in the group with manual suture closure, presenting a significant difference (p = 0.0047). The total laryngectomy with mechanical closure is an easy and fast learning technique, allowing watertight closure of the pharynx with a low risk of contamination of the surgical field. It is an assured method, even in previously irradiated patients, since we respect the limits of its indication regarding the extension of primary tumor that must be confirmed by previous suspension laryngectomy performed in the operating room.

Orocutaneous and Pharyngocutaneous Fistula Closure Using a Vacuum-Assisted Closure System

Objectives:

The vacuum-assisted closure (VAC) system is a topical negative pressure dressing that has been used extensively to manage a multitude of complicated wounds, including enterocutaneous fistula. We hypothesize that the VAC system may also facilitate the closure of orocutaneous and pharyngocutaneous fistulas.

Methods:

A retrospective chart review was performed.

Results:

Three patients were identified. Two patients developed fistulas after undergoing salvage laryngectomy, and 1 patient developed a fistula after having a hemiglossectomy defect reconstructed by a radial forearm free flap. The VAC system was successful in closing the fistula in 2 of the 3 patients. Complete fistula closure took 3 and 11 days in the 2 cases. The 1 failure of fistula closure was due to poor collapsibility of the neck tissue along the fistula tract caused by fibrosis following prior radiotherapy.

Conclusions:

The VAC system is a feasible treatment option for closing head and neck fistulas, especially when collapsible tissue is present at the fistula site.