Progress in monitoring methane emissions from landfills using drones: an overview of the last ten years.

Solid waste landfills are responsible for much of the anthropogenic methane emitted from the waste sector. The quantification of fugitive CH4 emissions from a landfill is to date characterised by high uncertainty and several methodologies have been devised to estimate emission fluxes. Unmanned Aerial Vehicles (UAVs, also known as drones) are revolutionising the way CH4 emission monitoring is conceived and offer new opportunities for quantifying emission fluxes from a landfill, mainly due to recent advances in sensor miniaturisation that make these instruments lighter and more suitable to be equipped on a drone. The paper analyses publications from the period 2014-2024 that illustrate UAV-based methods that can be used for this purpose, identifying experiences in the field and the current state of research. The review has highlighted a current research status characterised by a strong experimental focus, with few tests carried out in landfills under real emission conditions (33 % of the reviewed papers). Since 2018, there has been a growing interest in open-path sensors, tested in some controlled-release experiments according to different configurations which have given promising results, but experiences are limited and there are no experiments conducted directly in landfills. In general, the UAV-based methods identified by this systematic review are characterised by unclear uncertainties. Drones are a viable alternative to traditional monitoring methods at landfills and allow data to be acquired with a spatial and temporal resolution that can hardly be achieved by other low-cost methods. However, further studies and field trials are needed to better understand methodological aspects: especially the uncertainty of each step in the quantification process need to be properly analysed and quantified more precisely.

Life Cycle Assessment of a system for the extraction and transformation of Waste Water Treatment Sludge (WWTS)-derived lipids into biodiesel.

In recent years, the demand for biofuels has been growing exponentially, as has the interest in biodiesel produced from organic matrices. Particularly interesting, due to its economic and environmental advantages, is the use of the lipids present in sewage sludge as a raw material for the synthesis of biodiesel. The possible processes of this biodiesel synthesis, starting from lipid matter, are represented by the conventional process with sulfuric acid, by the process with aluminium chloride hexahydrate and by processes that use solid catalysts such as those consisting of mixed metal oxides, functionalized halloysites, mesoporous perovskite and functionalized silicas. In literature there are numerous Life Cycle Assessment (LCA) studies concerning biodiesel production systems, but not many studies consider processes that start from sewage sludge and that use solid catalysts. In addition, no LCA studies were reported on solid acid catalysts nor on those based on mixed metal oxides which present some precious advantages, over the homogeneous analogous ones, such as higher recyclability, prevention of foams and corrosion phenomena, and an easier separation and purification of biodiesel product. This research work reports the results of a comparative LCA study applied to a system that uses a solvent free pilot plant for the extraction and transformation of lipids from sewage sludge via seven different scenarios that differ in the type of catalyst used. The biodiesel synthesis scenario using aluminium chloride hexahydrate as catalyst has the best environmental profile. Biodiesel synthesis scenarios using solid catalysts are worse due to higher methanol consumption which requires higher electricity consumption. The worst scenario is the one using functionalized halloysites. Further future developments of the research require the passage from the pilot scale to the industrial scale in order to obtain environmental results to be used for a more reliable comparison with the literature data.

[Treatment practice in patients with isolated blunt splenic injuries. A survey of Swiss traumatologists]. / Die Behandlungspraxis bei Patienten mit isolierter stumpfer Milzverletzung. Eine Befragung der Schweizer Traumatologen.

BACKGROUND: The non-operative management (NOM) of blunt splenic injuries has gained widespread acceptance. However, there are still many controversies regarding follow-up of these patients. The purpose of this study was to survey active members of the Swiss Society of General and Trauma Surgery (SGAUC) to determine their practices regarding the NOM of isolated splenic injuries. MATERIALS AND METHODS: A survey of active SGAUC members with a written questionnaire was carried out. The questionnaire was designed to elicit information about personal and facility demographics, diagnostic practices, in-hospital management, preferred follow-up imaging and return to activity. RESULTS: Out of 165 SGAUC members 52 (31.5%) completed the survey and 62.8% of all main trauma facilities in Switzerland were covered by the sample. Of the respondents 14 (26.9%) have a protocol in place for treating patients with splenic injuries. For initial imaging in hemodynamically stable patients 82.7% of respondents preferred ultrasonography (US). In cases of suspected splenic injury 19.2% of respondents would abstain from further imaging. In cases of contrast extravasation from the spleen half of the respondents would take no specific action. For low-grade injuries 86.5% chose to admit patients for an average of 1.6 days (range 0-4 days) with a continuously monitored bed. No differences in post-discharge activity restrictions between moderate and high-grade splenic injuries were found. CONCLUSION: The present survey showed considerable practice variation in several important aspects of the NOM of splenic injuries. Not performing further CT scans in patients with suspected splenic injuries and not intervening in cases of a contrast extravasation were the most important discrepancies to the current literature. Standardization of the NOM of splenic injuries may be of great benefit for both surgeons and patients.

Thiazolide-induced apoptosis in colorectal cancer cells is mediated via the Jun kinase-Bim axis and reveals glutathione-S-transferase P1 as Achilles' heel.

Glutathione-S-transferase of the Pi class (GSTP1) is frequently overexpressed in a variety of solid tumors and has been identified as a potential therapeutic target for cancer therapy. GSTP1 is a phase II detoxification enzyme and conjugates the tripeptide glutathione to endogenous metabolites and xenobiotics, thereby limiting the efficacy of antitumor chemotherapeutic treatments. In addition, GSTP1 regulates cellular stress responses and apoptosis by sequestering and inactivating c-Jun N-terminal kinase (JNK). Thiazolides are a novel class of antibiotics for the treatment of intestinal pathogens with no apparent side effects on the host cells and tissue. Here we show that thiazolides induce a GSTP1-dependent and glutathione-enhanced cell death in colorectal tumor cell lines. Downregulation of GSTP1 reduced the apoptotic activity of thiazolides, whereas overexpression enhanced it. Thiazolide treatment caused strong Jun kinase activation and Jun kinase-dependent apoptosis. As a critical downstream target of Jun kinase we identified the pro-apoptotic Bcl-2 homolog Bim. Thiazolides induced Bim expression and activation in a JNK-dependent manner. Downregulation of Bim in turn significantly blocked thiazolide-induced apoptosis. Whereas low concentrations of thiazolides failed to induce apoptosis directly, they potently sensitized colon cancer cells to TNF-related apoptosis-inducing ligand- and chemotherapeutic drug-induced cell death. Although GSTP1 overexpression generally limits chemotherapy and thus antitumor treatment, our study identifies GSTP1 as Achilles' heel and thiazolides as novel interesting apoptosis sensitizer for the treatment of colorectal tumors.

The impact of the introduction of total mesorectal excision on local recurrence rate and survival in rectal cancer: long-term results.

PURPOSE: To investigate the influence of the introduction of total mesorectal excision (TME) on local recurrence rate and survival in patients with rectal cancer. METHODS: A total of 171 consecutive patients underwent anterior or abdominoperineal resection for primary rectal cancer. When the TME technique was introduced, the clinical setting, including the surgeons, remained the same. Group 1 (1993-95, n =53) underwent conventional surgery and group 2 (1995-2001, n = 118) underwent TME. All patients were followed for 7 years or until death. RESULTS: Between the two groups, no statistically significant differences were present with regards to patient-, treatment-, or tumor-related characteristics apart from the time point of radiotherapy. The total local recurrence rates were 11 of 53 (20.8%) in group 1 and 7 of 118 (5.9%) in group 2, and the rates of isolated local recurrences were 6 of 53 (11.3%) in group 1 and 2 of 118 (1.7%) in group 2. Both differences were highly statistically significant. The disease-free survival in groups 1 and 2 was 60.4 and 65.3% at 5 years, and 58.5 and 65.3% at 7 years, respectively. Excluding patients with synchronous or metachronous distant metastasis from the analysis, both the disease-free survival and the cancer-specific survival were statistically significantly better in group 2 than in group 1. No statistically significant difference between the two groups was detected regarding the overall survival. CONCLUSIONS: The introduction of TME led to an impressive reduction of the local recurrence rate. Survival is mainly determined by the occurrence of distant metastasis, but TME seems to improve survival in patients without systemic disease.

Colon cancer cells produce immunoregulatory glucocorticoids.

Glucocorticoids (GC) have important anti-inflammatory and pro-apoptotic activities. Initially thought to be exclusively produced by the adrenal glands, there is now increasing evidence for extra-adrenal sources of GCs. We have previously shown that the intestinal epithelium produces immunoregulatory GCs and that intestinal steroidogenesis is regulated by the nuclear receptor liver receptor homolog-1 (LRH-1). As LRH-1 has been implicated in the development of colon cancer, we here investigated whether LRH-1 regulates GC synthesis in colorectal tumors and whether tumor-produced GCs suppress T-cell activation. Colorectal cancer cell lines and primary tumors were found to express steroidogenic enzymes and regulatory factors required for the de novo synthesis of cortisol. Both cell lines and primary tumors constitutively produced readily detectable levels of cortisol, as measured by radioimmunoassay, thin-layer chromatography and bioassay. Whereas overexpression of LRH-1 significantly increased the expression of steroidogenic enzymes and the synthesis of cortisol, downregulation or inhibition of LRH-1 effectively suppressed these processes, indicating an important role of LRH-1 in colorectal tumor GC synthesis. An immunoregulatory role of tumor-derived GCs could be further confirmed by demonstrating a suppression of T-cell activation. This study describes for the first time cortisol synthesis in a non-endocrine tumor in humans, and suggests that the synthesis of bioactive GCs in colon cancer cells may account as a novel mechanism of tumor immune escape.

Management of blunt injuries to the spleen.

BACKGROUND: Non-operative management (NOM) of blunt splenic injuries is nowadays considered the standard treatment. The present study identified selection criteria for primary operative management (OM) and planned NOM. METHODS: All adult patients with blunt splenic injuries treated at Berne University Hospital, Switzerland, between 2000 and 2008 were reviewed. RESULTS: There were 206 patients (146 men) with a mean(s.d.) age of 38.2(19.1) years and an Injury Severity Score of 30.9(11.6). The American Association for the Surgery of Trauma classification of the splenic injury was grade 1 in 43 patients (20.9 per cent), grade 2 in 52 (25.2 per cent), grade 3 in 60 (29.1 per cent), grade 4 in 42 (20.4 per cent) and grade 5 in nine (4.4 per cent). Forty-seven patients (22.8 per cent) required immediate surgery. Transfusion of at least 5 units of red cells (odds ratio (OR) 13.72, 95 per cent confidence interval 5.08 to 37.01), Glasgow Coma Scale score below 11 (OR 9.88, 1.77 to 55.16) and age 55 years or more (OR 3.29, 1.07 to 10.08) were associated with primary OM. The rate of primary OM decreased from 33.3 to 11.9 per cent after the introduction of transcatheter arterial embolization in 2005. Overall, 159 patients (77.2 per cent) qualified for NOM, which was successful in 143 (89.9 per cent). The splenic salvage rate was 69.4 per cent. In multivariable analysis age at least 40 years was the only factor independently related to failure of NOM (OR 13.58, 2.76 to 66.71). CONCLUSION: NOM of blunt splenic injuries has a low failure rate. Advanced age is independently associated with an increased failure rate.

Systematic review of atraumatic splenic rupture.

BACKGROUND: Atraumatic splenic rupture (ASR) is an ill defined clinicopathological entity. METHODS: The aim was to characterize aetiological and risk factors for ASR-related mortality in order to aid disease classification and treatment. A systematic literature review (1980-2008) was undertaken and logistic regression analysis employed. RESULTS: Some 632 publications reporting 845 patients were identified. The spleen was normal in 7.0 per cent (atraumatic-idiopathic rupture). One, two or three aetiological factors were found in 84.1, 8.2 and 0.7 per cent respectively (atraumatic-pathological rupture). Six major aetiological groups were defined: neoplastic (30.3 per cent), infectious (27.3 per cent), inflammatory, non-infectious (20.0 per cent), drug- and treatment-related (9.2 per cent) and mechanical (6.8 per cent) disorders, and normal spleen (6.4 per cent). Treatment comprised total splenectomy (84.1 per cent), organ-preserving surgery (1.2 per cent) or conservative measures (14.7 per cent). The ASR-related mortality rate was 12.2 per cent. Splenomegaly (P = 0.040), age above 40 years (P = 0.007) and neoplastic disorders (P = 0.008) were associated with increased ASR-related mortality on multivariable analysis. CONCLUSION: The condition can be classified simply into atraumatic-idiopathic (7.0 per cent) and atraumatic-pathological (93.0 per cent) splenic rupture. Splenomegaly, advanced age and neoplastic disorders are associated with increased ASR-related mortality.

[Intestinal stomas--indications, stoma types, surgical technique]. / Der künstliche Darmausgang--Indikationen, Stomaformen, chirurgische Technik.

The formation of an intestinal stoma is one of the most frequent operations in visceral surgery. Despite new operative techniques and a more restrictive use of the stoma, the stoma formation remains an often necessary surgical procedure, which results to a dramatic change in the patients' life. The stoma formation and its later closure are associated with a high morbidity. Many complications, such as stoma necrosis, stoma retraction or stoma prolapse, are related to surgical mistakes made during stoma formation. These complications are therefore largely avoidable. The stoma formation needs careful planning together with a professional stoma nursing team. Moreover, it is mandatory that the stoma formation is made with great care and that it meticulously follows the well established surgical principles. A perfectly placed, technically correctly fashioned and easy to care for stoma is essential for a good patients'quality of life.

[Acute "difficult" gastrointestinal bleeding]. / Die akute "schwierige" gastrointestinale Blutung.

Gastrointestinal bleeding with its point of origin outside the reach of conventional gastro- and colonoscopy represents an extraordinary diagnostic and therapeutic challenge. Bleeding may originate from the small bowel distal to the duodenojejunal junction (middle gastrointestinal bleeding) or from the biliary tree (haemobilia) or from the pancreatic ductal system (haemosuccus pancreaticus). This particular type of gastrointestinal bleeding is often intermittend and caused by a variety of different pathologies. Angiography is the diagnostic method of choice for further investigation. It allows precise localization of the bleeding site and simultaneous interventional therapy (embolization/coiling). The importance of further diagnostic modalities such as scintigraphy, capsule endoscopy, push-enteroscopy and double-balloon-enteroscopy is discussed.

Mesenteric inflammatory veno-occlusive disease: a rare cause of intestinal ischemia. The first description of recurrent disease.

BACKGROUND: Mesenteric inflammatory veno-occlusive disease (MIVOD) is a rare cause of intestinal ischemia of unknown etiology. Histologically, MIVOD is characterized by extended thrombophlebitis and fibrous organized thrombosis of multiple veins. The arteries are by definition not involved. Management includes surgery in all cases described. Recurrence has not been described until now. METHODS: We describe the case of a 64-year-old woman operated with the suspicion of intestinal ischemia. Clinical and histopathological characteristics are reported. RESULTS: The patient underwent a right hemicolectomy and segmental resection of the terminal ileum 15 months later for a recurrence. The histological examination of the resected specimen confirmed the diagnosis of MIVOD and a recurrence thereof. CONCLUSION: MIVOD is a rare cause of colonic ischemia. Recurrence of the disease, which is described here for the first time, is unusual after surgical resection.

Total mesorectal excision preserves male genital function compared with conventional rectal cancer surgery.

BACKGROUND: The introduction of total mesorectal excision (TME) has been shown to improve local recurrence rates in rectal cancer. The present study investigated the impact of this more extensive and radical procedure with regard to autonomic pelvic nerve function. METHODS: Patients with resected primary rectal cancer were interviewed by means of a questionnaire asking about preoperative and postoperative urinary bladder and genital function. The results in patients after rectal cancer surgery without TME (group 1; n = 29) were compared with those obtained after introduction of the TME technique (group 2; n = 31). Patients in group 2 were older and had a lower level of anastomosis than patients in group 1. Other patient, treatment and tumour characteristics were comparable between the groups. RESULTS: : Newly acquired and permanent symptoms of bladder dysfunction after rectal excision were present as follows (group 1 versus group 2): difficulty in bladder emptying 7 versus 19 per cent; sensation of incomplete bladder voiding 17 versus 17 per cent; urgency 17 versus 14 per cent; incontinence 10 versus 3 per cent; dysuria 7 versus 7 per cent; and dribbling 14 versus 8 per cent. Male patients stated the following sexual functions before operation/after operation in group 1 versus group 2: interest in sex 80 per cent/40 per cent versus 63 per cent/37 per cent; sexually active 67 per cent/7 per cent versus 53 per cent/22 per cent; impotence 75 per cent/6 per cent versus 58 per cent/26 per cent; ability to have intercourse 75 per cent/13 per cent versus 67 per cent/29 per cent; ability to achieve orgasm 88 per cent/13 per cent versus 76 per cent/47 per cent; and orgasm with ejaculation 88 per cent/9 per cent versus 76 per cent/53 per cent. CONCLUSION: While both conventional rectal cancer surgery and TME result in similarly favourable postoperative bladder function, both techniques decrease sexual function. However, TME offers a significant advantage with regard to preservation of postoperative sexual function in men and constitutes a true advance in rectal cancer surgery compared with conventional techniques.

[The role of lymph nodes in colon carcinoma]. / Die Rolle der Lymphknoten beim Kolonkarzinom.

Metastatic spread of colon cancer to intermediate lymph nodes is found, depending on tumor stage, in up to 44% of patients and to central lymph nodes in about 10%. The incidence of skip metastases is estimated not to exceed 5%. Tumorous involvement of pericolic lymph nodes occurs almost only within a 10 cm distance from the primary. There is only one prospective randomized controlled trial available comparing hemicolectomy versus radical segmental colectomy in patients with left colonic cancer. In this limited study there was no statistical difference regarding survival, mortality and morbidity between the two groups. However, several large retrospective studies are in favor of extended colon resection with radical clearance of lymphatic tissue. In 198 patients with colon cancer excluding rectal cancer in a 6-year period we performed 151 radical (76%) and 47 segmental (24%) colonic resections. The median length of the specimens in an unstretched and formalin-fixed state was 39 cm and 19 cm, respectively. The mean number of investigated lymph nodes was 16 and 12, respectively. 40% of our patients showed lymph node metastases. In-hospital mortality was 4/198 patients (2%) and surgical morbidity occurred in 29/198 patients (15%). We recommend radical colonic resections in all potentially curable patients with colonic cancer.

Use of accurate diagnostic criteria may increase incidence of stercoral perforation of the colon.

PURPOSE: Stercoral perforation of the colon is reported to be a rare disease with poor prognosis. The aim of this study was to determine the frequency of stercoral perforation of the colon, to define diagnostic criteria for stercoral perforation of the colon, and to analyze the patient outcome in a university hospital gastrointestinal surgery unit. METHODS: From November 1993 until November 1998 all surgically treated patients with a colorectal disease were prospectively recorded in a computerized database. Diagnosis of stercoral perforation of the colon was made if 1) the colonic perforation was round or ovoid, exceeded 1 cm in diameter, and lay antimesenteric; 2) fecalomas were present within the colon, protruding through the perforation site or lying within the abdominal cavity; and 3) pressure necrosis or ulcer and chronic inflammatory reaction around the perforation site were present microscopically. Any additional colon pathology led to exclusion from the diagnosis of stercoral perforation of the colon. Using the same criteria, 81 cases in the literature were found to qualify and were further analyzed. RESULTS: In a five-year period 1,295 patients underwent colorectal interventions through laparotomy. A total of 566 (44 percent) cases were emergencies, 220 (17 percent) of these caused by colonic perforation. Seven patients had stercoral perforation of the colon. The incidence of stercoral perforation of the colon was 0.5 percent of all surgical colorectal procedures through laparotomy, 1.2 percent of all emergency colorectal procedures, and 3.2 percent of all colonic perforations. The mean age of the patients was 59 (median, 64; range, 22-85) years. All perforations were situated in the left hemicolon or upper rectum. The round or ovoid perforation had a mean diameter of 3.6 cm. Fecalomas were present in all patients and protruded from the perforation site or were found within the free abdominal cavity in three of them. Generalized stercoral peritonitis was a constant finding. Using a colonic resection without immediate restoration of continuity, an extensive intraoperative lavage, and antibiotics, there was no in-hospital mortality. Analysis of the reports in the literature revealed additionally that 28 percent of patients with stercoral perforation of the colon have multiple stercoral ulcers in the colon and that substantial mortality is encountered if only minor surgical procedures of treatment are used. CONCLUSIONS: The incidence of stercoral perforation of the colon seemed to have been underestimated. The reason for this might be the lack of defined diagnostic criteria for this disease. Low mortality is obtained by early surgical eradication of the affected part of the colon, including all stercoral ulcers, and by aggressive therapy for peritonitis.

Hepatic artery embolisation with a novel radiopaque polymer causes extended liver necrosis in pigs due to occlusion of the concomitant portal vein.

BACKGROUND/AIM: In an attempt to overcome some of the problems encountered with the materials available for liver embolisation, we investigated a novel radiopaque polymer of the polyurethane family (Degra-Bloc). METHODS: Hepatic artery embolisation of one liver lobe using polyurethane was performed in 19 healthy pigs. Microcirculatory changes were assessed by laser Doppler flowmetry. Radiological and pathological examinations of the livers, hearts and lungs removed provided information about the extent and effect of the embolisation. RESULTS: None of the pigs died due to hepatic failure or toxicity of polyurethane. Microcirculation of embolised liver lobes significantly decreased from 106 (+/-15) perfusion units (PU) to 45 (+/-6) PU immediately after embolisation and further to 28 (+/-7) PU before euthanasia. At this time conventional and angiographic X-ray controls demonstrated the radiopaque casts extending up to the peripheral arteries with signs of degradation over time but without formation of collateral vessels. The main pathological findings consisted of destruction of the portal tract structures and also of large areas of liver necrosis. Polyurethane was encountered in arterioles as small as 10-20 microm, but not in liver sinusoids, hearts or lungs. CONCLUSIONS: The novel polymer called DegraBloc is a biocompatible, slowly degradable, radiopaque embolic agent. The occlusion of the arterial tree up to the smallest arteriolar diameter combined with concomitant portal vein occlusion leads to sharp segmental necrosis in pig livers without formation of significant collaterals and without systemic embolism. In the treatment of liver tumours polyurethane might provide a promising alternative to conventional embolic materials, provided that it is used with care in patients with advanced liver cirrhosis.

[Rectal carcinoma. Optimizing therapy by partial or total mesorectum removal]. / Rektumkarzinom. Optimierung durch partielle oder totale Mesorektumentfernung.

The role of total mesorectal excision for rectal cancer treatment is one of the most exciting findings in surgical oncology of the recent years. The patient's prognosis largely depends on the surgical quality of rectal resection. The excision of the cancer bearing rectum has to follow very precisely along the mesorectal fascia by sharp dissection without damaging the mesorectum itself. This technique reduces the local recurrence rate to below 10% and allows long-term survival in two thirds of all patients. Rectal cancers of the middle and lower third of the rectum need to be treated by total mesorectal excision down to the muscular pelvic floor, the ones of the upper third and the sigmoideo-rectal junction are appropriately treated by partial mesorectal excision down to 5 cm below the tumor. No additional survival benefit may be expected when pelvic lymphadenectomy has been performed. The direct tumor spread along the bowel wall and the lymphatic tumor spread in a caudal direction are uncommon and late findings in rectal cancer disease. Low and ultralow rectal carcinomas may therefore be treated by a sphincter preserving procedure respecting a safety margin of at least 1 to 2 cm. Thus, continence preserving surgery may be performed in over 80% of patients suffering from rectal cancer without compromising long-term outcome.

Impacted papilla minor stone in pancreas divisum causing severe acute pancreatitis: a case for early ERCP in acute pancreatitis of unknown origin.

This is the first description of severe acute pancreatitis in pancreas divisum caused by a solitary stone impacted in the minor papilla. Recovery was rapid after diagnostic endoscopic retrograde cholangiopancreaticography (ERCP) and endoscopic stone removal. Since other etiological factors accounting for the acute pancreatitis were carefully excluded, it seems that obstruction of the minor papilla by a solitary pancreatic concrement was the most likely cause of acute pancreatitis. This case report demonstrates the diagnostic importance of early ERCP in cases of etiologically unexplained acute pancreatitis.

Laparoscopic partial hepatectomy in the rat: a new resectional technique.

BACKGROUND: Rats are widely used for basic research in laparoscopic surgery. We have developed a new technique of laparoscopic partial hepatectomy in the rat. METHODS: 40 American Cancer Institute rats were randomized into 3 groups. Group A (n = 14) underwent laparoscopic liver resection using a CO2 pneumoperitoneum. Group B (n = 14) was operated on with a gasless laparoscopic technique using a lifting device. A control group C (n = 12) underwent conventional open liver resection. In each group half of the animals underwent single lobectomy and the other half bilobectomy. RESULTS: The liver resection was performed successfully in all 40 rats. No conversion to open surgery was necessary. No mortality or morbidity was observed. CONCLUSIONS: This new technique of laparoscopic partial hepatectomy proved to be feasible and safe. It is the first description of a laparoscopic hepatic resection in the rat that could prove valuable in further investigations of liver physiology and pathology.

[Interdisciplinary evaluation for liver transplantation: the Bern concept]. / Interdisziplinäre Abklärung zur Lebertransplantation: Das Berner Konzept.

Orthotopic liver transplantation (OLT) is the therapy of choice for a variety of end-stage liver diseases. The 5 year survival rate for electively operated patients with non malignant liver disease is exceeding 70%. Crucial for patient management is the early referral of the patient to a liver transplant center where an interdisciplinary evaluation of the patient is undertaken during a short hospital stay. The diagnosis will be confirmed, the operability assessed, contraindications excluded and the conservative treatment improved. A timely operation is of extreme importance and is based on an estimation of the severity and the dynamics of the liver disease. The liver transplantation should be performed early in a patient with a preserved liver function in order to achieve the best results.

Early vitamin K deficiency bleeding after maternal phenobarbital intake: management of massive intracranial haemorrhage by minimal surgical intervention.

UNLABELLED: Vitamin K deficiency bleeding within the first 24 h of life is caused in most cases by maternal drug intake (e.g. coumarins, anticonvulsants, tuberculostatics) during pregnancy. Haemorrhage is often life-threatening and usually not prevented by vitamin K prophylaxis at birth. We report a case of severe intracranial bleeding at birth secondary to phenobarbital-induced vitamin K deficiency and traumatic delivery. Burr hole trepanations of the skull were performed and the subdural haematoma was evacuated. Despite the severe prognosis, the infant showed an unexpected good recovery. At the age of 3 years, neurological examinations were normal as was the EEG at the age of 9 months. CT showed close to normal intracranial structures. CONCLUSION: This case report stresses the importance of antenatal vitamin K prophylaxis and the consideration of a primary Caesarean section in maternal vitamin K deficiency states and demonstrates the successful management of massive subdural haemorrhage by a limited surgical approach.