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Background Compensatory hyperhidrosis (CH) is a frequent side effect after sympathectomy for the treatment of primary palmar hyperhidrosis. We determined the effects of demographic and clinical factors which may increase the duration of CH (DCH). Methods One hundred twenty-two patients who had undergone sympathectomies from 2014 to 2016 were retrospectively reviewed. Anxiety was evaluated using the State and Trait Anxiety Inventory score. Follow-up evaluations continued until CH remitted. A Cox proportional hazards model was used to determine the association between DCH and variables. Results DCH ranged from 5 to 27 weeks (median, 11.47 weeks). Severe CH (HR = 0.318, 95% CI, 0.136–0.741) and exacerbated anxiety 1 month post-operatively (HR = 0.816, 95% CI, 0.746–0.893) may prolong CH. A positive correlation between post-operative anxiety and DCH was common in patients with moderate or severe CH, and in cases with forearm CH. Conclusions Pre- and post-operative anxiety should be evaluated, and anti-anxiety treatment is offered to patients with moderate-to-severe CH to shorten the DCH. Electronic supplementary material The online version of this article (10.1186/s13019-018-0736-3) contains supplementary material, which is available to authorized users.

Esophageal squamous cell carcinoma (ESCC) is the dominant subtype of esophageal cancer worldwide. This study aimed to explore the aberrant global expression profiling and construct regulatory network in ESCC for understanding tumorigenesis of ESCC. The expression pattern of long non-coding RNA (lncRNA), microRNA (miRNA) and mRNA was measured by RNA-sequencing in ESCC. Differentially expressed lncRNAs/miRNAs/mRNAs (DELs/DEMs/DEMIs) were identified in ESCC. DEMIs-DEMs network was constructed; hsa-miR-424-5p and hsa-miR-450b-5p were the hub miRNAs in the network, which negatively regulated 19 and 17 DEMs. DEMs targeted by DEMIs were significantly enriched in MAPK signaling pathway, pathways in cancer and focal adhesion signaling pathway. The expression of candidate DEMs and DEMIs in ESCC were validated through quantitative real-time polymerase chain reaction and microarray expression profiling analyses, and the results were generally consistent with our bioinformatics analysis. Our results might provide useful information for exploring the tumorigenesis mechanism and potentially therapeutic targets in ESCC.

// Xu-Rui Jin 1, * , Lu-Yao Zhu 1, * , Kai Qian 1 , Yong-Geng Feng 1 , Jing-Hai Zhou 1 , Ru-Wen Wang 1 , Li Bai 2 , Bo Deng 1 , Naixin Liang 3 , Qun-You Tan 1 1 Department of Thoracic Surgery, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing 400042, P.R. China 2 Department of Respiratory Disease, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China 3 Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China * These authors contributed equally to this work Correspondence to: Bo Deng, email: deng.bo@dphospital.tmmu.edu.cn Naixin Liang, email: pumchnelson@163.com Qun-You Tan, email: tanqy001@163.com Keywords: lung adenocarcinoma, circulating tumor cells, AIS, EMT Received: September 14, 2016 Accepted: February 08, 2017 Published: February 19, 2017 ABSTRACT Purpose: The study aimed to monitor circulating tumor cells (CTCs) in early stage lung adenocarcinoma patients. Results: CTCs were characterized and classified to epithelial (E-) CTCs, mesenchymal (M-) CTCs and epithelial- mesenchymal (E&M-) CTCs, as per epithelial-mesenchymal transition(EMT) biomarkers. CTCs could not be found in healthy controls. However, in cohort A, CTCs were found in 17 (17/18) cases. Detection rate of E-CTCs was lower (5/18) compared with M-CTC (10/18) or E&M-CTC (14/18). Highly abundant M-CTCs were prone to being in the tumors > 2 cm. In cohorts A and B, CTCs count increased significantly in all patients with tumor progression (7/7). Higher CTCs level or change range could be found postoperatively in the patients with tumor progression, as compared with patients with disease free survival ( P < 0.01). Additionally, CTCs detected by CanPatrol TM could be validated by CytoploRare or Pep@MNPs. Materials and Methods: We included four cohorts of patients and 20 healthy controls. In cohort A, CTCs were detected by a newly established approach, i.e., CanPatrol TM , prior to anesthesia and monitored after operation longitudinally. In cohort B, CTCs were not assessed prior to operation, but were longitudinally detected after operation. For validation, we detected FOLR(+)-CTCs by using CytoploRare and EPCAM(+)-CTCs by using Pep@MNPs prior to operation, in cohorts C and D, respectively. Conclusion: CTCs can be detected in early stage lung adenocarcinoma, even in adenocarcinoma in situ , and CTCs detection can effectively monitor tumor progression. The distinguishing of biomarkers of highly invasive and aggressive CTCs warrants further robust study.

Background Convenient approaches for accurate biopsy are extremely important to the diagnosis of lung cancer. We aimed to systematically review the clinical updates and development trends of approaches for biopsy, i.e., CT-guided PTNB (Percutaneous Transthoracic Needle Biopsy), ENB (Electromagnetic Navigation Bronchoscopy), EBUS-TBNA (Endobroncheal Ultrasonography-Transbronchial Needle Aspiration), mediastinoscopy and CTC (Circulating Tumor Cell). Methods Medline and manual searches were performed. We identified the relevant studies, assessed study eligibility, evaluated methodological quality, and summarized diagnostic yields and complications regarding CT-guided PTNB (22 citations), ENB(31 citations), EBUS-TBNA(66 citations), Mediastinoscopy(15 citations) and CTC (19 citations), respectively. Results The overall sensitivity and specificity of CT-guided PTNB were reported to be 92.52% ± 3.14% and 97.98% ± 3.28%, respectively. The top two complications of CT-guided PTNB was pneumothorax (946/4170:22.69%) and hemorrhage (138/1949:7.08%). The detection rate of lung cancer by ENB increased gradually to 79.79% ± 15.34% with pneumothorax as the top one complication (86/1648:5.2%). Detection rate of EBUS-TBNA was 86.06% ± 9.70% with the top three complications, i.e., hemorrhage (53/8662:0.61%), pneumothorax (46/12432:0.37%) and infection (34/11250:0.30%). The detection rate of mediastinoscopy gradually increased to 92.77% ± 3.99% with .hoarseness as the refractory complication (4/2137:0.19%). Sensitivity and specificity of CTCs detection by using PCR (Polymerase Chain Reaction) were reported to be 78.81% ± 14.72% and 90.88% ± 0.53%, respectively. Conclusion The biopsy approaches should be chosen considering a variety of location and situation of lesions. CT-guided PTNB is effective to reach lung parenchyma, however, diagnostic accuracy and incidence of complications may be impacted by lesion size or needle path length. ENB has an advantage for biopsy of smaller and deeper lesions in lung parenchyma. ENB plus EBUS imaging can further improve the detection rate of lesion in lung parenchyma. EBUS-TBNA is relatively safer and mediastinoscopy provides more tissue acquisition and better diagnostic yield of 4R and 7th lymph node. CTC detection can be considered for adjuvant diagnosis.

// Bo Deng 1, * , Tianyu Sun 1, * , Bo Tang 1, * , Shaolin Tao 1 , Poming Kang 1 , Kai Qian 1 , Bin Jiang 1 , Kun Li 1 , Kunkun Li 1 , Jinghai Zhou 1 , Ruwen Wang 1 and Qunyou Tan 1 1 Department of Thoracic Surgery, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing 400042, China * These authors have contributed equally to this work Correspondence to: Qunyou Tan, email: tanqy001@163.com Keywords: adenoviral p53 gene; non-small cell lung cancer; radical surgery; recurrence; metastasis Received: June 27, 2017 Accepted: September 20, 2017 Published: November 06, 2017 ABSTRACT Objective: To assess the efficacy of radical surgery combined with recombinant adenoviral human p53 (rAd-p53) gene therapy in treatment of resectable non-small cell lung cancer. Method: A total of 163 patients with resectable NSCLC meeting the inclusion criteria were randomly assigned to two groups: radical surgery alone (S) and radical surgery plus surgical wound surface injection of 2 x 10 12 rAd-p53 units (SP). All patients were followed up for at least 3 years for efficacy and safety. Study endpoints were loco-regional recurrence or distant metastasis (Rec-Met) rate as primary endpoints, and progression free survival (PFS), overall survival (OS) and safety assessments as secondary endpoints. Results: Recurrence or metastasis (Rec/Met) after surgery were 24/82 (29.27%) in SP group and 37/81 (45.68%) in S group. The difference in the Rec/Met rate was statistically significant (p = 0.0304) by chi-square test. The hazard ratios after adjusting of age and disease stage (S vs. SP) of PFS and OS are 1.772 (95% CI, 1.102 to 2.848) and 2.047 (95% CI, 1.109 to 3.377), respectively. The 3 years PFS and OS for SP vs. S were 71.9% vs. 46.9%, and 88.4% vs. 67.0%, respectively. Differences in PFS and OS between two treatment groups were significant with the p values of 0.0165 and 0.0191, respectively, using Log-Rank test. Conclusions: The wound surface injection of rAd-p53 showed efficacious effects in preventing recurrence or metastasis and improving PFS and OS after a radical surgery in patients with NSCLC.

Based on a large number of reference, by using non-linear FE analytical method to analyze the lightweight steel concrete horizontal bearing capacity. In order to obtain more accurate simulation results, using solid element to simulate the various components of the wall, between the concrete and the wall frame columns are connected by the binding manner. To limit the beam wall vertical wall planar degrees of freedom .The coupling beam at the loading point X direction freedom, which was calculated in the X direction. The analyzing result shows that the light steel structure is the main force members of the composite wall. And the increase of concrete strength can also improves the horizontal bearing capacity of the composite wall, but the concrete is not as the main bearing capacity of the component.

Using the finite element method to analysis the bearing capacity of light steel-foam concrete composite wall frame column under vertical load. Through the analysis of the bearing capacity of the wall frame columns filled with different grades of foamed concrete under the vertical load, the results of the effect of filled foamed concrete on the bearing capacity of light steel composite wall are obtained. Results show: 1) for the light steel structure with no foamed concrete, the spacing of the wall frame column is increased from 400mm to 600mm, and the axial load bearing capacity is reduced. 2) for the steel foam concrete filled with 12MPa foam concrete structure, the spacing of the wall frame column is increased from 400mm to 600mm, the axial bearing capacity decreases slightly. 3) when the strength of foam concrete is reduced to 8MPa, or increased to 24MPa, the spacing of the wall frame column increases from 400mm to 600mm, the axial bearing capacity decreases first and then increases.

In order to study the influence of the replacement ratio of recycled aggregate and the volume of waste fiber on the fracture performance of concrete, the three-point bending test is carried out on the waste fiber recycled concrete precast beams. Calculate the waste recycled fiber concrete fracture parameters according to the double-K fracture model. The results show that the fracture indexes of recycled fiber are related to the recycled aggregate replacement ratio and the volume content of waste fiber. The larger the replacement rate of recycled aggregate is, the smaller the fracture indexes of the specimens are. The volume content of waste fiber is 0.12%, which has the most significant effect on the fracture performance. The study shows that waste fiber can improve the fracture properties of recycled aggregate concrete.

In this paper, for four groups of recycled concrete specimen in early shrinkage and re- straint cracking experiment, which the recycled aggregate replacement ratio of 100% and the waste fiber volume content of 0, 0.08%, 0.12%, 0.16%. Experimental results show that: when the volume content of waste fiber is 0.08%, the effect of reducing shrinkage is more obvious, while the volume content of waste fiber is 0.12%, the performance of anti-cracking is the best.

This paper studies small eccentric compression test of eight waste fiber recycled concrete columns with recycled coarse aggregate replacement ratio, waste fiber length, and waste fiber incorporation as parameters. The test is carried out on the failure mode and ductility of the waste fiber recycled concrete columns, which are also compared with those of the ordinary concrete column.

In lung cancer A549 cells, the present study evaluated the associations between p130cas expression and the activation of p38 or Smad2, which are components of two of the main signaling pathways of transforming growth factor-β1 (TGF-β1), i.e., epithelial-mesenchymal transition (EMT) and apoptosis, respectively. TGF-β1-induced EMT was investigated by inspecting cell shape and cell migration, and by testing E-Cadherin, N-Cadherin and Vimentin biomarkers in p130cas-RNA interference (RNAi)-A549 cells. The changes in TGF-β1-induced apoptosis, i.e., cleaved Caspase-3 levels, were additionally analyzed following p130cas-RNAi. p130cas-knockdown decreased the phosphorylated (p)-p38 expression level, and blockaded the TGF-β1-induced activation of p-p38 in the A549 cells. p130cas-knockdown arrested cell migration and impaired TGF-β1-induced EMT in the A549 cells, characterized by changes in cell morphology and biomarker levels. However, p130cas-knockdown had no impact on the activation of Smad2 and the cleavage of Caspase-3. These results indicate that p130cas is a novel molecular ‘rheostat’ that alters the function of the TGF-β1 signaling pathway from tumor suppression to tumor promotion in lung cancer cells. The underlying mechanism warrants further study.

We aim to optimize surgical strategy to decrease relapse of tubercular abscess in the chest wall (TACW).The records of 120 patients who underwent surgical treatment for TACW from May 2005 to March 2011 were retrospectively reviewed. We conducted the following surgical treatment as '6C + A' by abbreviating the first alphabet of each step: (i) careful exploration of the abscess; (ii) complete resection; (iii) cavity washing using sodium bicarbonate solution; (iv) coverage using muscle flap; (v) continuous suction and drainage; (vi) compression dressing and (vii) anti-tuberculosis medication.One hundred and thirteen cases were discharged for rehabilitation with the first stage wound healing (113/120). Four cases postoperatively suffered from subcutaneous fistula which was healed after dressing changes for 1-2 months. Three patients with an abscess relapse underwent the second operation 2 months after the first operation. Follow-ups ranged from 2 months to 6 years and demonstrated no recurrence.We deem the surgical procedures '6C + A' effective to obviate relapse of TACW.

Objective Our previous study suggested the potential clinical implications of BCAR1 in non-small-cell lung cancer (NSCLC) (Mol Diagn Ther. 2011. 15(1): 31–40). Herein, we aim to evaluate the predictive power of BCAR1 as a marker for poor prognosis in NSCLC cases, verify the carcinogenic roles of BCAR1 in the A549 lung adenocarcinoma cell line, and testify to the BCAR1/phospho-p38 axis. Methods Between January 2006 and June 2010, there were a total of 182 patients with NSCLC (151 cases with available follow up data, and 31 cases lost to follow-up due to the invalid contact information). We inspected BCAR1, phospho-BCAR1(Tyr410), phospho-p38(Thr180/Tyr182) and p38 expression in NSCLC tissues and matched adjacent normal tissues by immunoblotting and IHC. After BCAR1 -RNA interference in A549 cells, we inspected the protein expression (BCAR1, phospho-BCAR1, phospho-p38 and p38) and performed cell biology experiments (cell growth, migration and cycle). Results BCAR1 was overexpressed in NSCLC tissues (177/182) and cell lines (A549 and Calu-3). However, it was not detected in the normal adjacent tissue in 161 of the 182 cases. Higher BCAR1 levels were strongly associated with more poorly differentiated NSCLC and predicted poorer prognosis. BCAR1 knockdown caused cell growth arrest, cell migration inhibition and cell cycle arrest of A549 cells. Overexpression of BCAR1 was associated with activation of p38 in NSCLC cases, and BCAR1 knockdown caused reduction of phospho-p38 levels in A549 cells. Conclusion Overexpression of BCAR1 is a predictor of poor prognosis in NSCLC and plays important carcinogenic roles in carcinogenesis, probably via activation of p38 MAPK. However, further investigations are required immediately.

AIM: To evaluate the diagnosis of chest pain with foregut symptoms in Chinese patients. METHODS: Esophageal manometric studies, 24-h introesophageal pH monitoring and 24-h electrocardiograms (Holter electrocardiography) were performed in 61 patients with chest pain. RESULTS: Thirty-nine patients were diagnosed with non-specific esophageal motility disorders (29 patients with abnormal gastroesophageal reflux and eight patients with myocardial ischemia). Five patients had diffuse spasm of the esophagus plus abnormal gastroesophageal reflux (two patients had concomitant myocardial ischemia), and one patient was diagnosed with nutcracker esophagus. CONCLUSION: The esophageal manometric studies, 24-h intra-esophageal pH monitoring and Holter electrocardiography are significant for the differential diagnosis of chest pain, particularly in patients with foregut symptoms. In cases of esophageal motility disorders, pathological gastroesophageal reflux may be a major cause of chest pain with non-specific esophageal motility disorders. Spasm of the esophageal smooth muscle might affect the heart-coronary smooth muscle, leading to myocardial ischemia.

Objective: In the study, we made the pharyngoesophageal functional assessment and menometric study on the two kinds of anastomosis (traditional hand-sewn anastomosis and side-to-side stapled anastomosis) for the further evaluation and application of cervical esophagogastrostomy. Patients: The study included 17 patients with esophageal squamous cancer from March 2006 to May 2008. Eight patients had undergone total esophagectomy and traditional hand-sewn technique in CEGA. The other nine patients had undergone total esophagectomy and side-to-side stapled technique in CEGA. All the 17 patients were studied for 3 months after the operations. The complete data, such as esophagogastroscopy, barium swallow and manometric studies, were obtained for each participating patient. Results: In the hand-sewn group of eight patients, four patients (50%) reported clinical significant symptoms of cervical dysphagia. Two patients (11.1%) reported clinical significant symptoms of cervical dysphagia in the side-to-side group of nine patients. There is a statistically significant difference between the hand-sewn group of patients (n = 8) and the side-to-side group of patients (n = 9) with respect to overall mean anastomotic diameters (1.688 � 0.26 cm vs 3.012 � 0.17 cm, p = 2.10 � 10 � 8 ). In the eight patients who underwent hand-sewn technique, there were four symptomatic patients with poor menometric datum, such as anastomotic hypertensive peristaltic activity, confusing inversion of anastomotic and midcervical esophageal pressure, and consequently poor compliance of the pharyngoesophageal segment (pharyngeal shoulder pressure). By contrast, there was only one symptomatic patient with poor menometric data in the nine patients who underwent sideto-side technique. Conclusion: The side-to-side stapled technique is conducive to decrease complications of postoperative dysphagia and is helpful for improving pharyngesophageal and anastomotic menometric function. The anastomotic technique deserves more attention and further applications. # 2008 European Association for Cardio-Thoracic Surgery. Published by Elsevier B.V. All rights reserved.

Esophageal carcinoma patients with coexisting severe emphysema are high risk surgical candidates. We hypothesize that simultaneous unilateral lung volume reduction surgery (LVRS) allows us to offer esophageal tumor resection to patients previously considered inoperable.Twenty-one patients with esophageal carcinoma were recruited. All patients had severe emphysema with impaired respiratory function and health-related quality of life (HRQL). Esophageal tumor resection with gastroesophagostomy in the thorax and then unilateral LVRS were performed at the same anesthesia. Dyspnea index, exercise capacity, pulmonary function, and HRQL were assessed at baseline and every three months up to one year postoperatively.There was no perioperative death or significant morbidity. Clinical improvements were observed at 3, 6, and 12 months, in terms of dyspnea index, forced expiratory volume in 1 second, residual volume, partial pressure of oxygen, arterial, partial pressure of carbon dioxide, arterial, 6-minute walking distance, dysphagia, and odynophagia (p0.01 or p0.05). The Karnofsky Performance Status score improved from baseline 36 +/- 3 to 53 +/- 3 at 3 months, 67 +/- 5 at 6 months, and 63 +/- 8 at 12 months (p0.01). Significant improvement was seen in all the Short-Form 36-item Health Survey HRQL domains at 3 months (p0.01 or p0.05). These improvements remained significant for up to 6 months, and for up to 12 months for physical functioning and general health. The Psychosocial Adjustment to Illness Scale score and all the scales were improved after surgery (p0.01).Our study shows that in selected patients with esophageal carcinoma who suffer from severe emphysema, simultaneous unilateral LVRS renders esophageal tumor resection safe and effective. Also, these patients may experience early improvement in pulmonary function and HRQL.

Objective: We sought to present our experience in preventing esophageal stricture formation using modified intraluminal stenting in patients with caustic burns. Methods: Between April 1976 and June 2005, 33 of 162 patients with corrosive esophageal burns were included in this study. Endoscopy was performed to define the degree of injury in all the patients but one. Among the 33 patients, 31 underwent modified esophageal intraluminal stentingthroughlaparotomy2—3weeksafteringestionofcorrosiveagentandtheremaining2patientsunderwentimmediatelyafter experiencing esophageal perforation. Results: There was no death in this series. A 1-year-old child had aspiratory pneumonia because of poor compliance. The stent was removed without requiringanesthesia after it had been in situ for 4—6 months in the 33 patients. All the patients had a normal intake of food after removal of the stents, and stricture was not found on barium swallow. However, five patients had esophageal stenosis from 2 to 3 months during follow-up. One of them responded to esophageal bougienage, the remaining four patients required esophageal reconstruction and had a normal diet postoperatively. Twenty-four-hour pH monitoring in five patients showed that there was no gastroesophageal reflux. Conclusion: The modified esophageal intraluminal stent is able to prevent the formation of caustic esophageal stricture.

To evaluate the effect of lung volume reduction surgery (LVRS) combined with esophagogastrostomy in thorax on quality of life of the patients with severe emphysema combined with esophageal or cardiac carcinoma.Eighteen patients suffering from esophageal or cardiac carcinomas and severe emphysema with severely impaired respiratory function and low quality of life underwent resection of carcinoma and esophagogastrostomy in thorax. And then, same side LVRS was performed using TLC75 stapler. All staple lines were buttressed with bovine pericardial strips. Quality of life was evaluated before operation and every 3 months up to one year postoperatively by using the Short-form 36 (SF-36) health questionnaire.The volumes of resected pulmonary tissues, weighing (62.2 +/- 9.6) g, accounted for 25% - 30% of the total volume of the same side lung parenchyma. All the cases went through successfully the perioperative period without hospital mortality. Postoperative hospital stay averaged 19.7 +/- 4.8 days (15 to 23 days). All of the functions included in the SF-36 were improved (P0.01 or P0.05).Esophagogastrostomy in thorax combined with LVRS significantly benefits the patients with severe emphysema and esophageal or cardiac carcinoma in terms of long-term quality of life.

Background The purpose of this study is to introduce the use of a single-staged and laterally based platysma myocutaneous flap in patch stricturoplasty for relieving short and benign cervical esophageal stricture. Methods Medical records were reviewed for 28 patients undergoing platysma myocutaneous flap for patch stricturoplasty in covering and widening short and benign cervical esophageal stricture in our department during the period between April 1990 and January 2004. The length of follow-up ranged from 4 months to 10 years with an average of 5 years. The surgical technique was described and the follow-up data was analyzed. Results There were no operation deaths and all flaps survived without any necrosis. Anastomosis leakage developed in three cases (ie, two that were small and healed spontaneously after cervical drainage, whereas the third needed surgical revision). Re-stenosis occurred between the transposed flap and the gullet in two cases, one of which was relieved by repeated esophageal dilations and the other one was resolved by reoperation. No ulceration or carcinogenesis was discovered in the skin paddle during the time of follow-up. Pathologic analysis showed that the keratin layer of the skin paddle became thinner but was still arranged in the same structure as that of the normal skin. At the end of the follow-up, all 28 patients gained body weight on a regular oral diet. Conclusions Platysma myocutaneous flap can be accomplished in a single stage owning many advantages in comparison with other flaps for patch stricturoplasty in relieving the short and benign cervical esophageal stricture (ie, it is closer to the recipient site, thinner, pliable, and reliable).

Objectives We sought to present our experience in the management of esophageal burns. Methods From April 1976 through October 2003, 149 patients with corrosive esophageal burns were included in this study. Treatment modalities consisted of modified intraluminal stenting in 28, colon interposition in 71, gastric transposition in 25, repair of cervical stricture with platysma myocutaneous flap in 17, and miscellaneous operations in 12 patients. Eleven of these patients underwent the above procedures twice at our institute. The remaining 7 patients were treated with conservative therapy. Results Twenty-three patients recovered from intraluminal stenting, and 5 experienced stricture after stent removal. One of the 5 patients with failed stents responded to bougienage, and the remaining 4 patients required esophageal reconstruction later. Of the 71 colon interpositions, 5 patients died postoperatively, and complications consisted of proximal anastomotic fistula in 17, anastomotic stenosis in 6, and abdominal incision dehiscence in 2 patients. Postoperative complications in the 25 patients with gastric transpositions comprised anastomotic stricture in 2 patients and empyema in 1 patient. There was a cervical leak in 1 of the 17 patients undergoing the repair of cervical esophageal or anastomotic stricture with a platysma myocutaneous flap. One of the patients in the group undergoing 12 miscellaneous procedures died 8 months after surgical intervention. All the survivors currently eat regular diets. Conclusions Intraluminal stenting can prevent the formation of caustic esophageal stricture. The location of the cicatricial esophagus dictates whether to perform concomitant esophagectomy during esophageal reconstruction. Platysma myocutaneous flap repair is an excellent method for the treatment of severe cervical esophageal or anastomotic stricture.

Objective We sought to test the feasibility and technical ease of a newly designed nitinol–based modified esophageal stent and its effects on preventing postcaustic stricture in mongrel dogs and to try to explain the result at the molecular level. Methods Twenty-four dogs were included in this controlled study. Stenosis index (wall thickness/intraluminal diameter), pathologic features, hydroxyproline quantities, esophageal compliance, and biomechanics were compared between the injured but unstented and stented dogs. Transforming growth factor β1, Sma/Mad (Smad)3, and Smad7 mRNA expression and protein levels in esophageal tissue were detected by means of reverse transcriptase–polymerase chain reaction and Western blotting, respectively. Results The modified esophageal stent was able to be placed and retrieved successfully and conveniently and was not only intact but there was also no macroscopic esophageal mucosal injury after the stent removal 4 months later. In comparison with the injured but unstented group, esophageal compliance, biomechanics, and the stenosis index were significantly better in the stented group. Histopathologic study revealed that collagen bundles were thinner and its orientation tended toward a regular and parallel pattern. Transforming growth factor β1 and Smad3 mRNA expression and protein levels increased and Smad7 mRNA expression and protein levels decreased significantly in esophageal tissue in the stented group. These variables showed no statistically significant difference 2 months after stent removal. Conclusions The modified esophageal stent might be a promising stent in preventing stricture formation after corrosive esophageal burns clinically.