Publications by authors named "Hans-Olaf Johannessen"

Reasons for structural and outcome differences in esophageal cancer surgery in Western Europe remain unclear. This questionnaire study aimed to identify differences in the organization of esophageal cancer surgical care in Western Europe. A cross-sectional international questionnaire study was conducted among upper gastrointestinal (GI) surgeons from Western Europe.

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Objectives: Extent of surgical repair of spontaneous esophageal effort rupture (Boerhaave syndrome) has gradually decreased by the emergence of minimal invasive treatment based on endoscopic stent sealing of the perforation. However, for this diagnosis, use of endoscopic vacuum therapy (EVT) is still in its beginning. We present our results after 7-years with both stent and/or EVT-based treatment.

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Background: Few European centers have reported on robotic gastrectomy for malignancy. We report our early experience with curative-intent total robotic gastrectomy.

Materials And Methods: The Intuitive Surgery Da Vinci Surgical System Xi 4 armed robot was used.

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Purpose: More long-term follow-up studies beyond 10 years after secondary sphincteroplasty for obstetric damage are warranted. This prospective study aimed to compare reported data on incontinence and satisfaction in a cohort of such patients examined at short-, long-, and very long-term follow-up.

Methods: Twenty out of 33 obstetric patients (61%) operated with secondary anterior overlapping sphincteroplasty during February 1996 to April 2004 were evaluated preoperatively and at short-, long-, and very long-term follow-up.

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At our hospital, the main treatment for resectable esophageal cancer (EC) has since 2013 been total minimally invasive esophagectomy (TMIE). The aim of this study was to present the short- and long-term results in patients operated with TMIE. This cross-sectional study includes all patients scheduled for TMIE from June 2013 to January 2016 at Oslo University Hospital.

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Introduction: Ischemia is considered as the main reason for thoracic gastroesophageal anastomotic leaks after esophagectomy. Microcirculatory monitoring with laser Doppler flowmetry and visible light spectroscopy may provide valuable intraoperative real-time information about the gastric tube's tissue perfusion and circulation.

Patients And Methods: Ten patients with esophageal cancer operated with minimally invasive esophagectomy participated in this single-center, prospective, observational pilot study.

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Background: Both at short- and long-term follow-up we have reported major improvement of the symptom of constipation in patients treated with resection rectopexy for internal rectal intussusception (IRI). The aim was to study whether this improvement also persisted in a cohort of these patients after very long-term follow-up.

Methods: Observational and mainly prospective study of a cohort of 13 out of 48 patients with IRI who initially had ligament-preserving resection rectopexy with suture by laparoscopic ( = 11) or open ( = 2) technique.

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Objective: To investigate if prolonged TTS after completed nCRT improves postoperative outcomes for esophageal and esophagogastric junction cancer.

Summary Of Background Data: TTS has traditionally been 4-6 weeks after completed nCRT. However, the optimal timing is not known.

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Hereditary ventricular polyposis in the form of gastric adenocarcinoma and proximal polyposis of the stomach (GAPPS) is a rare condition characterised by a typical distribution of polyps in the stomach and risk of gastric cancer at a young age. Prophylactic gastrectomy may be indicated. The condition is not thought to be associated with increased risk of colon cancer, but the evidence base is limited.

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Over the past two decades, hybrid and total minimally invasive esophagectomy for esophageal cancer (EC) has increasingly been implemented with the aim to improve morbidity, functional result and ultimately the prognosis in these patients. However, more results are warranted and in this single-center study we report long-time outcome in a cohort of cancer patients treated with hybrid esophagectomy (HE). Hundred and nine patients with EC operated with HE from November 2007 to June 2013 were included.

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Objectives: Iatrogenic perforations are the most common cause of esophageal perforation. We present our experience mainly based on a non-operative treatment approach as well as long-term outcome in these patients.

Materials And Methods: Twenty-one patients were treated for iatrogenic esophageal perforation at Oslo University Hospital, Ullevål from February 2007 to March 2014.

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Background: We wished to assess our experiences with laparoscopy used in curative resection for gastric cancer.

Material And Method: All patients with gastric cancer who underwent curative-intent surgery, irrespective of access, in the period 1 May 2015-28 February 2018 at Oslo University Hospital Ullevål were included. The patient care pathway and oncological results were registered continuously and analysed retrospectively.

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Objectives: Food bolus-induced esophageal perforation is much more seldom than iatrogenic and emetic esophageal rupture. We present results from a non-operative treatment approach as well as long-term functional outcome.

Materials And Methods: Medical records of 10 consecutive patients with food bolus-induced esophageal perforation from October 2007 to May 2015 were retrospectively registered in a database.

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Introduction: Following esophagectomy about 5% of patients experience long-term gastric conduit retention. We report two patients with surgical correction for this problematic condition. This case series is a retrospective, non-consecutive single center report.

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Objectives: Surgical repair has been the most common treatment of esophageal effort rupture (Boerhaave syndrome). Stent-induced sealing of the perforation has increasingly been used with promising results. We present our eight years´ experience with stent-based and organ-preserving treatment.

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BACKGROUND Surgery is considered necessary to achieve a cure for oesophageal cancer. Minimally invasive oesophageal resection is increasingly performed with the aim of reducing the number of complications compared with open surgery. The purpose of this study was to investigate postoperative complications, mortality and long-term survival following hybrid oesophageal resection by laparoscopy and thoracotomy.

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Introduction: Myotonic dystrophies are inherited multisystemic diseases characterized by musculopathy, cardiac arrythmias and cognitive disorders. These patients are at increased risk for fatal post-surgical complications from pulmonary hypoventilation. We present a case with myotonic dystrophy and esophageal cancer who had a minimally invasive esophagectomy complicated with gastrobronchial fistulisation.

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Background: Epiphrenic diverticula occur in the lowermost 10 cm of the oesophagus. The main symptoms are dysphagia, regurgitation and pain when swallowing food. The main purpose of the survey was to evaluate the department's results for surgical treatment of this rare and distressing condition.

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Background and Aims. The optimal treatment of patients with internal rectal intussusception (IRI) is unresolved. The aim was to study the short- and long-term outcome of resection rectopexy in these patients.

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Objective: To study short- and long-term improvement in obstetric anal incontinence after secondary overlapping sphincteroplasty and repeat repairs.

Design: A prospective analysis based on incontinence scores and patient satisfaction.

Setting: Department of Gastroenterological Surgery, Oslo University Hospital, a tertiary unit also dealing with sphincter repair.

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Objective: To examine the association between the outcomes of a pre-operative comprehensive geriatric assessment (CGA) and the risk of severe post-operative complications in elderly patients electively operated for colorectal cancer.

Methods: One hundred seventy-eight consecutive patients ≥ 70 years electively operated for all stages of colorectal cancer were prospectively examined. A pre-operative CGA was performed, and patients were categorized as fit, intermediate, or frail.

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Background: Endometriosis is defined as a condition with ectopic endometrial tissue outside the uterine cavity, with pain and infertility as the dominating symptoms. The disease affects about 10% of fertile women. We have described the most common manifestations of endometriosis (peritoneal, ovarian and deep endometriosis) with an emphasis on surgical treatment.

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Background: Esophageal perforation is a serious condition with a high mortality. Treatment is both surgical and conservative.

Material And Methods: Records were retrospectively reviewed for 22 patients (17 men), with median age 64 (30-85) years, that had been treated for esophageal perforation at Ullevaal University Hospital in the period 2000-2006.

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Objective: To assess the need for intestinal repeat resection for recurrence of Crohn's disease in patients observed for more than 20 years after the first resection.

Material And Methods: Data were gathered retrospectively from the medical records of 53 (28 F) consecutive patients with Crohn's disease from May 1954 to December 2002. Median age at first intestinal resection was 24.

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Background: To study the feasibility, complications and symptom relief of laparoscopic treatment in patients with deep infiltrating endometriosis.

Methods: From January 2004 to March 2005, 24 patients with deep infiltrating endometriosis were treated with laparoscopic techniques. Preoperative symptoms, staging, involvement of the disease, and surgical procedures were recorded.

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