Malignant esophageal-respiratory fistula and esophageal stenosis treated with a Gianturco-Z-stent

Oesophago-respiratory fistula in most instances in a complication of advanced malignant tumours of the oesophagus or the lung. In our patient group eleven oesophago-respiratory and one gastro-respiratory fistulas were encountered. Three patients were operated upon. In one of them with achalasia, early oesophageal carcinoma was discovered in the background of the fistula. Two patients had fistulas without of oesophageal narrowing, therefore, stent implantation into the trachea and bronchus was performed. One of them was previously managed endoscopically with lyodura plug and fibrin glue, but only temporary occlusion of the fistula was obtained. In five patients, seven conventional oesophageal prosthesis (6 Cook, 1 Rüsch) were used to close the fistulas. In one of these patients, three oesophago-respiratory fistulas developed one after the other at the level of the prosthesis funnel. They were closed with three prostheses connected with short silicone tubes. In the last two patients, Gianturco-Z stent was employed. Its advantages over the plastic prostheses include small basic and lager final luminal diameter, lesser predilatation, easier implantation, lower complication and mortality rate. The silicone coated and double funnel stent with expansile force is effective in fistulas closure. On implantation, stent shortening in minimal, allowing precise placement of the stent even in proximal malignant oesophageal stenosis with oesophago-bronchial fistula. The high price of the stent is compensated for by the lower complication rate, shorter hospitalization and subsequent reduction is hospital expenses. Therefore these metal stents should be financed by the National Health Service, at least in specialized centers for managing patients with dysphagia.     

Thrombolysis and endovascular stent placement for inferior vena caval thrombosis in a liver transplant recipient

BACKGROUND: Vascular complications remain an important cause of postoperative morbidity in liver transplant patients. Herein, we present an unusual case of nonanastomotic inferior vena cava (IVC) stenosis in a patient with a "piggyback" caval anastomosis. METHODS: A 59-year-old woman underwent liver transplantation using a piggyback IVC anastomosis. Her postoperative course was complicated by IVC thrombosis. Catheter-directed thrombolysis, followed by balloon angioplasty and intravascular stent placement, was used to recanalize the IVC and treat a severe retrohepatic IVC stenosis. RESULTS: After 46 hr of catheter-directed urokinase infusion, there was clot lysis and identification of a severe stenosis in the retrohepatic IVC. The lesion was extremely resistant to balloon dilatation alone and a 22-mm-diameter intravascular stent was placed. Simultaneous dilatation of three high-pressure balloons was necessary for maximal stent expansion. The patient remains asymptomatic with no evidence of IVC compromise through 20 months of follow-up. CONCLUSIONS: IVC stenosis and thrombosis after liver transplantation may be treated favorably in some patients using catheter-directed thrombolytic therapy followed by balloon dilatation and/or stent placement.     

The use of Wallstent in malignant constrictions of the gastrointestinal tract

Prosthesis implantation in malignant oesophageal stenosis, postoperative gastric outlet obstruction and jejunal stenosis is a quick and efficient method. The expansile metal stents are a new alternative to conventional plastic prosthesis. The Wallstent is made of surgical steel alloy elements braided in tubular fashion. The Wallstent is delivered in a small diameter device, but it expands to a much larger size after placement than the inner diameter of plastic stent. The small predilatations diameter makes implantation of the Wallstent less prone to cause complications or severe discomfort to the patient. The authors implanted seven Wallstents in six patients. One patient had oesophageal cancer, one ischaemic jejunal stenosis and four jejunal stenosis due to extraluminal tumour recurrences following total gastrectomy for cancer. The authors discuss in detail the usefulness of the Wallstent implantation in two cases with malignant disease of the oesophagus and jejunum. They remained symptoms free for 7 and 10 months after Wallstent implantation until death. Despite their higher initial cost, the metal stents are cost effective because of the absence of early and severe complications and the decrease in the hospitalization.     

Comments on "An approach for modeling noncancer dose responses with an emphasis on uncertainty" and "A probabilistic framework for the Reference Dose (probabilistic RfD)"

Common bile duct (CBD) surgery sometimes demands performing 'a la Roux' hepaticojejunal anastomosis. This kind of stoma is technically easy to perform on a biliary stump of sufficient width (> 8 mm), sufficient length (> 0.5 cm) and with a resilient wall so that stitches will not cut off. In some cases, however, the anatomical conditions are poor: short or thin biliary stump. This situation is especially encountered in iatrogenic lesions of the main biliary channel, but it can infrequently be found in some malignant lesions of the CBD. The authors present their procedure of hepaticojejunal anastomosis without suture, which is adequate for the treatment of benign or even malignant stenosis of the CBD. The method realizes anastomosis of the segments without using sutures by simply keeping them in apposition with continuous traction exerted via a Foley-type balloon catheter which stents the anastomosis in an axial manner. The balloon is then inflated and traction is exerted on the catheter, enabling the two segments of the anastomosis to remain in place until complete healing (10 days average). We performed the procedure in 7 cases: 4 for neoplastic stenosis, and 3 for an accidental lesion of the CBD. There was no perioperative morbidity and 1 fatal outcome. The results prompt further evaluation of the method.     

Clinical application of soft-tissue flap with an intercostal vascular pedicle from the chest wall in the trachea surgery

Between 1976 and 1995, 11 cases of side-wall defect repairment or circumferential reconstruction of trachea were performed using chest-wall tissue flap with an intercostal vascular pedicle. The indications were benign or malignant tumors of the tracheal side wall, lung cancers of the right upper lobe involving the side wall of the trachea and/or carina. The transverse diameter of the tracheal defect after removing the tumor was less than half of the tracheal circumference. Furthermore, we foun it feasible to reconstruct the trachea by using a tissue tube created by wrapping a chest-wall tissue flap over a temporary stent in case of long-segment tracheal resection of tracheal tumor or benign stenosis where. The defect was too long to be repaired by end-to-end anastomosis. The surgical technique & instructions were described.     

Upper esophageal stenosis: two case reports

Esophageal stenosis caused by an intrinsic congenital deformity is uncommon in infants and children. The main forms of stenosis are congenital esophageal web congenital stricture caused by tracheobronchial remnants, and congenital idiopathic muscular hypertrophy. The authors report on two patients who were successfully treated and managed after being diagnosed as having upper esophageal stenosis. One patient underwent resection of the web and primary anastomosis of the esophagus and was discharged 6 days after surgery. After 1 year, this patient has had no symptoms of dysphagia or other postoperative difficulties. The second patient underwent balloon dilatation of the esophageal stricture and was discharged on the day of surgery; however, this patient required numerous repeat dilatations.     

Fatal pneumococcal septicaemia in a coeliac patient

We report a case of complete descending colon obstruction due to diverticular disease that was initially managed by endoscopic stent placement followed by single-stage left colectomy with primary anastomosis. Traditional management of complete large bowel obstruction, whether due to benign or malignant disease, most often requires a temporary colostomy because of unprepared colon. In this case, preparation of the colon was accomplished by successful stenting of the benign colonic obstruction. We believe that endoscopic colonic stenting is an effective way of avoiding a temporary colostomy in patients with complete large bowel obstruction.     

Physician opinions of preterm infant outcome and their effect on antenatal corticosteroid use

A patient suffering from esophagorespiratory fistula after bougienage of a benign stricture at the site of the anastomosis between a jejunal interposition and the esophagus was referred for interventional treatment. A prototype nitinol stent centrally covered with Dacron was implanted under regional anesthesia and fluoroscopic guidance. The self-expanding prosthesis dilated the stenosis completely and closed the fistula, with consequent improvement in respiratory and nutritional status and thus the general quality of life. The patient was able to eat and drink normally until death 3 months later due to progression of his underlying malignant disease.     

Musculoaponeurotic fibromatosis of both bones of forearm

PURPOSE: To compare the incidence of stenosis after hand-sewn and stapled ileoanal anastomosis. Stenosis of the ileoanal anastomosis occurs in 5-16% of patients undergoing a restorative proctocolectomy but the incidence using a stapled technique is unknown. METHODS: Between 1976 and 1990, 266 patients underwent restorative proctocolectomy or proctectomy at one hospital. In two hundred and eighteen the anastomosis was hand sewn and stapled in 48 (single 33; double 15). RESULTS: Stenosis occurred in 31 (14.2%) of the hand-sewn and in 19 (39.6%) of the stapled anastomoses. This difference was highly significant (P < 0.001). Stenosis was not related to the size of the staple head used or to the stapling technique. There was no relationship between the development of stenosis and pelvic sepsis. Twenty six (hand-sewn 16, stapled 10) of the 48 patients with stenosis needed dilatation under general anaesthetic. CONCLUSION: Stapled anastomoses may result in a high incidence of anastomotic stenosis.     

Benign and malignant esophageal strictures: treatment with a polyurethane-covered retrievable expandable metallic stent

PURPOSE: To evaluate the clinical effectiveness of a polyurethane-covered, retrievable, self-expandable metallic stent and hook catheter in the treatment of esophageal strictures. MATERIALS AND METHODS: Stents were constructed of 0.4-mm stainless steel wire in a cylindric zig-zag configuration of six to nine bends. Four to eight stents were connected in tandem by dipping in a polyurethane solution. A nylon loop was hooked inside to each bend of the proximal portion of the stent and strung with a thread. Under fluoroscopic guidance, 22 stents were placed in 16 patients with a malignant stricture and five patients with a benign stricture. The stent was removed with a hook catheter 2 months after placement in patients with a benign stricture and when complications occurred in patients with a malignant stricture. All patients had dysphagia with ingestion of soft foods or liquids. RESULTS: Stent placement was technically successful and well tolerated in 20 patients. In one patient, the stent was misplaced but relocated successfully. After stent placement, all patients were able to ingest solid and/or soft foods without dysphagia. After stent removal, strictures showed improvement but recurred in two patients. CONCLUSION: Use of polyurethane-covered, retrievable expandable stents seems to be a feasible and effective method of treatment of benign and malignant esophageal strictures.     

Automatic typing of bacterial isolates

PURPOSE: To assess the use of self-expanding metallic stents in patients with inoperable malignant antrum-pylorus-duodenal obstruction. METHODS: Six patients underwent implantation of a Wallstent self-expanding metallic endoprosthesis (20 mm in five patients and 16 mm in one). In five patients a catheter (Berenstein) was introduced perorally into the stomach. A guidewire (Terumo) was introduced through the catheter and advanced through the antrum-pylorus-duodenal stenosis. The guidewire was removed and a 260-cm-long, 0.035" superstiff guide (Amplatz) was introduced. After the catheter was removed the stent assembly was introduced. In the last patient the stent was implanted through a percutaneous gastrostomy. RESULTS: Treatment of inoperable gastric outlet obstruction caused by tumor compression is difficult and unsatisfactory. Peroral implantation of self-expanding metallic stents resulted in successful palliative therapy of antrum-pylorus-duodenal stenosis in six patients in whom surgery was not possible because of advanced disease and poor general condition. On average, patients were able to eat during 41 days. One patient is tolerating oral intake at 3 months. CONCLUSION: Implantation of stents resulted in palliative relief of malignant antrum-pylorus-duodenal obstructions.     

Palliative treatment of malignant esophagorespiratory fistulas with Gianturco-Z stents. A prospective clinical trial and review of the literature on covered metal stents

OBJECTIVE: Esophagorespiratory fistulas, especially in the upper third of the esophagus, are a complication of malignant esophageal tumors, which are difficult to manage. The efficacy of polyurethane-covered, self-expanding metal stents for palliation of malignant esophagorespiratory fistulas was investigated prospectively. METHODS: Eleven patients with malignant esophagorespiratory fistulas resp. perforations were treated with Gianturco-Z stents. In five patients the lesion was located in the proximal part of the esophagus. Because of the fistula all patients suffered from dysphagia even for liquids. RESULTS: No technical problems during the implantation procedure of the stents occurred. In the control radiography with water-soluble contrast media, the fistulas were completely sealed in 10 of 11 patients. Therefore the dysphagia score improved from 3.0 to 0.6. Nearly all Gianturco-Z stents (10/11) showed a sufficient expansion within 24 h after placement. Severe early or late complications were not encountered, with the exception of tumor overgrowth in one patient about 9 months after stent placement. In five patients, short term (3-6 days) retrosternal pain was observed, and one patient complained of slight foreign body sensation. By August 1997 all 11 patients had died of advanced disease, with a median survival time of 121 days (range, 22-300 days). CONCLUSIONS: Gianturco-Z stents are highly effective for palliative treatment of esophagorespiratory fistula resp. perforations and have a low complication rate. Due to the fact that this stent shows no retraction during the release, a precise positioning is possible, especially in the case of tumors and fistulas in the upper third of the esophagus. It seems that use of the Gianturco-Z stent can be considered a good therapeutic method for palliative endoscopic treatment of this high risk patient group.     

Overexpression of eukaryotic initiation factor 4E (eIF4E) in breast carcinoma

BACKGROUND: Eukaryotic initiation factor 4E (eIF-4E) is a 25-kilodalton phosphoprotein that binds specifically to mRNA as the initial step for mRNA translation. An elevated level of eIF4E has been associated with the up-regulation of various protooncogene products. Transfection of cell lines by viral vectors with eIF4E overexpression has resulted in malignant transformation. The objective in this study was twofold: to examine benign and malignant breast specimens for eIF4E expression, and to determine whether eIF4E overexpression may have prognostic potential. METHODS: Western blot analysis was performed on benign and malignant breast specimens using anti-eIF4E rabbit antiserum. Quantification was accomplished by developing blots with nitroblue tetrazolium and 5-bromo-4-chloro-3-indolyl phosphate and densitometry. Confirmation of eIF4E overexpression at the cellular level was performed using immunohistologic staining in situ. RESULTS: The authors examined 112 breast specimens for eIF4E protein expression. Of the 52 benign breast specimens examined, none showed eIF4E overexpression. All 12 ductal carcinoma in situ specimens were found to overexpress eIF4E in the intermediate range (mean elevation: 2.5-fold). Of the 48 breast carcinoma specimens examined, all had eIF4E elevation at levels of 3-30-fold (mean: 10.5 +/- 0.9-fold). Charts from 39 patients with Stage I, II, and III breast carcinoma were reviewed. In ten patients with eIF4E overexpression of < sevenfold, there was no recurrence or death from breast carcinoma. In the 29 breast carcinoma patients with > or = 7-fold eIF4E overexpression, 9 patients had breast carcinoma recurrences and 5 had died from disease at last follow-up. The median follow-up in this study was 34.5 months. CONCLUSIONS: Overexpression of eIF4E was observed in malignant breast specimens but not in normal or benign breast tissues. In patients with breast carcinoma, the group with high eIF4E overexpression (> or = 7-fold) experienced a worse clinical outcome (higher recurrences and death) compared with the group with low eIF4E overexpression (< 7-fold).     

Palliative endoscopic treatment of proximal malignant biliary stenosis

24 patients (median age 71.5 years) with inoperable proximal malignant biliary obstruction were treated by insertion of endoscopic endoprostheses from January 1991 to August 1994. 10 patients had gallbladder cancer, 6 cancer of body or tail of pancreas, 5 cholangiocarcinoma and 3 other metastatic malignancy, respectively. 13 patients had type I, 10 had type II and 1 had type III proximal biliary stenosis (Bismuth classification). Stent occlusion or dislocation required a secondary stent insertion in 9 patients. In all cases there was adequate biliary drainage after stent insertion. Complications were: early cholangitis developed in 2 patients, late cholangitis in 5, stent dislocation in 3. One patient underwent an operation because of necrotising cholecystitis and subhepatic abscess. There was no bleeding, retroperitoneal perforation or pancreatitis. 18 patients died (median survival time 28 weeks) and 6 have been alive at the time of review for 15 weeks in average. Endoscopic stent insertion can be applied effectively also in the palliative treatment of proximal malignant biliary obstruction.     

Severe stenosis of the right coronary artery in a 15-year-old girl with type IIa hypercholesterolemia: successful treatment with stent implantation

Coronary artery stenosis with need for therapy is rarely seen in childhood. A 15-year-old girl with hypercholesterinaemia type II a was undergoing lipid aphereses therapy (once or twice a week) since she was 6 years old. The girl was seen in our hospital with stenocardia and depression of the ST-segment in the inferior ECG leads at rest. Myocardial scintigraphy with technetium 99 showed an ischemia of the infero-lateral left ventricular myocardium. During selective coronary angiography a 90% stenosis of the proximal right coronary artery over a distance of approximately 5 mm close to the ostium was found. Post stenotic dilatation of the vessel was obvious. In addition a diffuse 10% stenosis in the proximal and middle part of the right coronary artery was found. The left coronary artery appeared angiographically normal. After balloon dilatation, stent implantation was performed without complications with a 6 mm microstent. Reduction of the stenosis from 90% to 40% could be achieved. Ticlopidin 2 x 250 mg was started for thrombocyte aggregation inhibition. During the following 12 months the patient has been free of symptoms. Lipidaphareses has been continued as before. Stent implantation seems to be a successful treatment for coronary artery stenosis also in young patients.     

Gin and tonic and reactive hypoglycemia: what is important-the gin, the tonic, or both?

STUDY OBJECTIVES: To assess the short- and long-term effects of balloon dilatation using a fiberoptic bronchoscope in the management of benign tracheobronchial stenosis (TBS). Treatment strategies have included open surgical resection or endoscopic techniques. The endoscopic techniques have included Nd:Yag laser, cryotherapy, stent placement, rigid bronchoscopy, and balloon dilation (BD). DESIGN: Prospective sequentiality study. SETTING: Tertiary care academic hospital. PATIENTS: This study consisted of 14 patients, ages ranging from 35 to 72 years, whose symptoms of dyspnea, cough, or wheeze were attributable to a TBS. INTERVENTION: This study describes the use of flexible fiberoptic bronchoscopy (FFB) with a balloon catheter for airway dilation. Each patient underwent FFB, in which a balloon catheter was threaded over the guidewire and positioned across the stenosis. Under direct visualization, the balloon was inflated for 30 to 120 s. Repeat inflation-deflation cycles were done if airway narrowing remained after the initial attempt. RESULTS: Seven patients had TBS following lung transplantation, three after sleeve resection, two following irradiation therapy, and two due to fibrosing mediastinitis. All patients had initial success: increased airway dimensions and symptom relief. Ten patients had successful airway dilation after one session. Of the four patients who required multiple sessions, one had cryotherapy and in each of the others an airway stent was placed. CONCLUSIONS: BD offers immediate symptom relief and can be used in conjunction with Nd:Yag laser, cryotherapy, stent placement, or mechanical dilation with a rigid bronchoscope. The advantages of FFB with BD include operator familiarity, patient safety, and avoidance of general anesthesia.     

Gastric-tube esophagoplasty in children

From 1979 to 1996, 19 patients underwent gastric-tube esophagoplasty. There were 10 boys and 9 girls, aged between 1 year 4 months and 4 years 11 months at the time of surgery. In 1 patient the esophagoplasty was performed due to a long stenosis secondary to reflux; 3 others had caustic stenoses; and the remaining patients had esophageal atresia. In 17 cases an isoperistaltic gastric tube was brought up to the neck through the retrosternal space; in 2 an anisoperistaltic gastric tube was used, cervical mobilization being via the posterior mediastinum without a thoracotomy in 1 case and by the left transpleural route in the other. The cervical anastomosis was carried out in one surgical stage in 12 patients and in two stages in 7. In 1 patient the tube was resected due to necrosis of its proximal third; the child later underwent an esophagocoloplasty. Necrosis of the colic graft, mediastinitis, and septicemia occurred, leading to the only death in the series. There were 12 fistulas of the cervical anastomosis (63.3%) and 8 stenoses (42.1%). All fistulas, with 1 exception, closed spontaneously after 8 days to 2 months, and all stenoses were treated by endoscopic dilatation. Another patient developed a fistula of the gastric tube with chronic evolution to a stenosis of the distal third of the tube and communication with the right lower pulmonary lobe. A lobectomy and closure of the fistula were necessary. All patients were followed for a period of 1 to 16 years. At present, all of them swallow solid food normally. The evolution of the nutritional status was normal (eutrophic) in 14 of the 18 patients (77.7%) who survived the operation; 4 showed variable degrees of malnutrition. In 2 of these 4 cases the malnutrition was due to poor socioeconomic conditions, but was not related to the surgery. Redundancy, a problem associated with esophagocoloplasty, was not observed in any of the gastric tubes, which was attributed to the thickness of the gastric wall. The authors prefer the use of an isoperistaltic gastric tube (with proximal base) for esophageal replacement in children and recommend that the operation should be carried out when the child is able to swallow solid foods and walk. As in any other major surgical procedure, a good nutritional state is essential prior to operation.     

An efficient method for cloning in-frame fusion protein genes

BACKGROUND: Transhiatal oesophagectomy is an accepted approach for the treatment of carcinoma of the oesophagus. However, experience of this technique in benign diseases is limited. METHODS: Transhiatal oesophagectomy was done in 29 patients for benign oesophageal conditions including corrosive stricture (21), achalasia of the cardia (four), tuberculosis (one), mediastinal fibrosis (one), Crohn's disease (one) and peptic stricture (one). Dysphagia was the predominant symptom in all patients; strictures had all previously been dilated repeatedly. The stomach was used as an oesophageal substitute in 24 patients; in five with a scarred stomach due to damage by a corrosive agent, oesophagocoloplasty was performed. Resection and reconstruction were done in one stage in 25 patients; four with poor nutritional status had a two-stage procedure. RESULTS: There was no perioperative death. Complications encountered were recurrent laryngeal nerve palsy (six patients) which was mostly transient, anastomotic leak (seven) and stenosis (eight). Postoperative function of the intrathoracic stomach was satisfactory. CONCLUSION: Transhiatal oesophagectomy is a safe and satisfactory procedure for benign obstructive conditions of the oesophagus.     

A stereologic study on the influence of stent tube pressure on bilio-intestinal anastomotic scar formation

Biliary tract injury results often in biliary scar stricture causing obstructive jaundice and biliary cirrhosis. Choledocho-jejunostomy with tube stent is the routine to prevent anastomotic stenosis, but how long the stent tube should be in place is controversial and little is known on the influence of the stent tube on anastomotic scar formation. In canine experimental models, bili-intestinal scar was sampled 3 weeks, 3, 6, 9 and 12 months after anastomosis for ultrastructure stereologic image analysis. It was found that the internal pressure of the stent tube exerting on anastomotic stoma inhibits scar formation, and the stent tube should be remained inside the stoma for not less than 9 months.