Publications by authors named "Torsten J Wilhelm"

Purpose: To explore associations of nutritional, infectious, and lifestyle factors with esophageal cancer (EC) occurrence in a high-risk area of Malawi.

Methods: This case-control study was performed with 227 patients undergoing endoscopy for dysphagia or other upper gastrointestinal complaints. Data on clinicopathological characteristics and risk factors were collected using a questionnaire developed for this study specifically.

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Background: Pancreatic surgery demands complex multidisciplinary management. Clinical pathways (CPs) are a tool to facilitate this task, but evidence for their utility in pancreatic surgery is scarce. This study evaluated the effect of CPs on quality of care for pancreatoduodenectomy.

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Purpose: Pancreatic surgery demands complex multidisciplinary management, which is often cumbersome to implement. Clinical pathways (CPs) are a tool to facilitate this task, but evidence for their utility in pancreatic surgery is scarce. This study evaluated if CPs are a suitable tool for process standardization in order to improve process and outcome quality in patients undergoing distal and total pancreatectomy.

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Objectives:  The M-ANNHEIM classification of chronic pancreatitis (CP) stratifies degrees of disease severity according to the M-ANNHEIM-Severity-Score. We aimed to demonstrate the clinical usefulness of the M-ANNHEIM-Severity-Score in quantifying and predicting the frequency of pancreatic surgery, and to establish the M-ANNHEIM-Surgery-Score as a simplified system for patient surveillance regarding the demand of pancreatic surgery.

Methods:  We performed a retrospective, cross-sectional study with 741 CP patients (Mannheim/Germany, n = 537; Gießen/Germany, n = 100; Donetsk/Ukraine, n = 104) categorized according to the M-ANNHEIM classification.

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Background/objectives: Chronic pancreatitis (CP) is a risk factor for pancreatic cancer (PDAC). CP and PDAC are characterized by an abundance of desmoplastic tissue. The effect of this pancreatic desmoplastic tissue on PDAC is poorly understood.

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Significant numbers of liver biopsies fail to yield representative tissue samples. This study was conducted to evaluate the ability of LED-based diffuse reflectance spectroscopy to discriminate tumors from liver parenchyma. Ex vivo spectra were acquired from malignant lesions and liver parenchyma of 32 patients who underwent liver resection using a white light source and several LEDs.

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This study was designed to explore the role of human papillomavirus (HPV) in esophageal squamous cell carcinoma (ESCC). Fifty-five patients receiving diagnostic upper gastrointestinal endoscopy at Zomba Central Hospital or Queen Elizabeth Hospital in Blantyre (Malawi) in 2010, were included in our study. Formalin-fixed paraffin-embedded biopsies were collected for histopathological diagnosis.

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Background/aims: The prevalence and incidence of autoimmune pancreatitis (AiP) in those living in western countries are largely unknown. We aimed to determine the prevalence of AiP among patients with pancreatitis presenting to our tertiary referral center in Mannheim, Germany; and to estimate the incidence of AiP in the Southwest of Germany.

Methods: We performed a retrospective cross-sectional analysis and determined the prevalence of AiP in patients with acute pancreatitis (AP) or chronic pancreatitis (CP).

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Background: There is substantial uncertainty regarding the optimal surgical treatment for chronic pancreatitis. Short-term outcomes have been found to be better after duodenum-preserving pancreatic head resection (DPPHR) than after partial pancreatoduodenectomy. Therefore, we designed the multicentre ChroPac trial to investigate the long-term outcomes of patients with chronic pancreatitis within 24 months after surgery.

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There is a shortage of orthopaedic surgeons in Malawi. Orthopaedic clinical officers (OCOs) treat trauma patients and occasionally perform major orthopaedic surgery. No studies have assessed the efficacy and safety of their work.

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Background: Pancreatic pseudocysts (PPC) are collections of fluid encapsulated within a well-defined inflammatory wall that develop during pancreatic inflammation. Internal drainage represents the standard of care in lesions that persist and lead to symptoms and complications. Only limited data are available on long-term results and recurrence of PPC after drainage procedures.

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Background/objectives: We had developed the Unifying-Autoimmune-Pancreatitis-Criteria (U-AIP) to diagnose autoimmune pancreatitis (AiP) within the M-ANNHEIM classification of chronic pancreatitis. In 2011, International-Consensus-Diagnostic-Criteria (ICDC) to diagnose AiP have been published. We had applied the U-AIP long before the ICDC were available.

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Introduction: Pancreatitis, panniculitis and polyarthritis syndrome is a very rare extra-pancreatic complication of pancreatic diseases.

Presentation Of Case: While in most cases this syndrome is caused by acute or chronic pancreatitis, we report a case of a 62-year-old man presenting with extensive intraosseous fat necrosis, polyarthritis and panniculitis caused by a post-pancreatitis pseudocyst with a fistula to the superior mesenteric vein and extremely high blood levels of lipase. This became symptomatic 2.

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Introduction: Previous reports showed an excellent survival for patients after resection of pancreatic metastases from renal cell cancer (pRCC) and reported several predictive factors. This study aims to give more evidence to reported risk factors by analyzing a large cohort of patients with pancreatic resection due to pRCC.

Patients And Methods: We retrospectively analyzed all pancreatic resections due to pRCC between January 1993 and October 2014 in two German pancreatic surgery centers.

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Background: In contrast to the diverticulosis of the colon, jejunal diverticulosis is a rare condition. The incidence is 0.06-5% in large autopsy series.

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Introduction: Duodenum-preserving pancreatic head resection is a safe procedure with a more favorable short-term outcome compared to pancreaticoduodenectomy. However, some patients develop mechanical complications or suspicion of malignancy during follow-up and need reoperation years after primary surgery. Aim of this study was to evaluate incidence, techniques, and complication rates of redo operations.

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Background: The POSSUM score is a predictive scoring system for postoperative morbidity. Although numerous studies have validated its application in major abdominal surgery, few have exclusively considered pancreatic resections, which have unique complications that are costly and problematic. We examined whether POSSUM could accurately reflect the clinical outcomes in pancreatic resection.

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Background And Objectives: Esophageal cancer is common in Malawi and most patients are inoperable at time of diagnosis. The aim of this study was to prospectively evaluate palliative treatment with self-expanding metal stents (SEMS) in Malawi, a low-income country with limited medical resources.

Methods: Data of patients with advanced inoperable esophageal cancer were prospectively collected.

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In some sub-Saharan African countries non-physician clinicians have to perform major general surgery without medical officers and surgeons. The safety of this practice has not been established. The aim of this study was to evaluate the contribution of clinical officers (COs) to major general surgery at Zomba Central Hospital.

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Purpose: The goal of this study was to investigate whether locally available Nylon mosquito net might be a useful alternative to expensive commercial mesh implants for hernia repair, a clinical randomized double-blind study was performed.

Materials And Methods: Over a period of 3 months 35 patients with a total of 40 inguinal hernias were randomized for hernia repair with either a commercial graft (Ultrapro) or a piece of sterilized 100% Nylon mesh available as mosquito net in most African village markets. The surgeons' comfort in handling the meshes, the incidence of complications, and the patients' quality of life before and 30 days after hernia repair were evaluated.

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We present the case of a unique accumulation of complications 55 years after ureterosigmoidostomy for bladder exstrophy and discuss possible implications for follow-up strategies.

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