Novel multiparametric MRI detects improved future liver remnant quality post-dual vein embolization.

BACKGROUND: Optimisation of the future liver remnant (FLR) is crucial to outcomes of extended liver resections. This study aimed to assess the quality of the FLR before and after dual vein embolization (DVE) by quantitative multiparametric MRI. METHODS: Of 100 patients with liver metastases recruited in a clinical trial (Precision1:NCT04597710), ten consecutive patients with insufficient FLR underwent quantitative multiparametric MRI pre- and post-DVE (right portal and hepatic vein). FLR volume, liver fibro-inflammation (corrected T1) scores and fat percentage (proton density fat fraction, PDFF) were determined. Patient metrics were compared by Wilcoxon signed-rank test and statistical analysis done using R software. RESULTS: All patients underwent uncomplicated DVE with improvement in liver remnant health, median 37 days after DVE: cT1 scores reduced from median (interquartile range) 790 ms (753-833 ms) to 741 ms (708-760 ms) p = 0.014 [healthy range <795 ms], as did PDFF from 11% (4-21%), to 3% (2-12%) p = 0.017 [healthy range <5.6%]. There was a significant increase in median (interquartile range) FLR volume from 33% (30-37%)% to 49% (44-52%), p = 0.002. CONCLUSION: This non-invasive and reproducible MRI technique showed improvement in volume and quality of the FLR after DVE. This is a significant advance in our understanding of how to prevent liver failure in patients undergoing major liver surgery.

Quantitative multiparametric MRI allows safe surgical planning in patients undergoing liver resection for colorectal liver metastases: report of two patients.

It is not uncommon for clinicians to encounter varying degrees of hepatic steatosis in patients undergoing resection for colorectal liver metastases (CRLM). Magnetic resonance imaging is currently the preferred investigation for identification and pre-operative planning of these patients. An objective assessment of liver quality and degree of steatosis is paramount for planning a safe resection, which is seldom provided by routine MRI sequences. We studied two patients who underwent an additional pre-operative multiparametric MRI scan (LiverMultiScanTM) as a part of an observational clinical trial (HepaT1ca, NCT03213314) to assess the quality of liver. Outcome was assessed in the form of post-hepatectomy liver failure. Both patients (Patient 1 and 2) had comparable pre-operative characteristics. Both patients were planned for an extended right hepatectomy with an estimated future liver remnant of approximately 30%. Conventional preoperative contrast MRI showed mild liver steatosis in both patients. Patient one developed post-hepatectomy liver failure leading to prolonged hospital stay compared to patient two who had uneventful post-operative course. Retrospective evaluation of multiparametric MRI scan revealed findings consistent with fibro-inflammatory disease and steatosis (cT1 829 ms, PDFF 14%) for patient 1 whereas patient two had normal parameters (cT1 735 ms, PDFF 2.4%). These findings corresponded with the resection specimen histology. Multiparametric MRI can objectively evaluate future liver health and volume which may help refine surgical decision-making and improve patient outcomes.

Randomized trial of steroid free immunosuppression with basiliximab induction in adult live donor liver transplantation (LDLT).

BACKGROUND: Corticosteroids are an integral part of immunosuppression following solid organ transplantation, despite their metabolic complications. We conducted a randomized trial to evaluate the efficacy of steroid-free immunosuppression following live donor liver transplantation (LDLT). METHODS: We randomized 104 patients stratified based on pre-transplant diabetic status to either a steroid-free arm (SF-arm) (Basiliximab + Tacrolimus and Azathioprine,n = 52) or Steroid arm (S-Arm) (Steroid + Tacrolimus + Azathioprine,n = 52). The primary endpoint was the occurrence of metabolic complications (new-onset diabetes after transplant (NODAT), new-onset systemic hypertension after transplant (NOSHT), post-transplant dyslipidemia) within 6 months after transplant. Secondary endpoints included biopsy-proven acute rejection (BPAR) within six months, patient and graft survival at 6 months. RESULTS: The incidence NODAT was significantly higher in S-arm at 3 months (64.5%vs. 28.1%,p-0.004) and 6 months (51.6% vs. 15.6%,p-0.006). Likewise, the incidence of NOSHT (27.8% vs. 4.8%,p-0.01) and hypertriglyceridemia (26.7% vs. 8%,p-0.03) at six months was significantly higher in S-arm. However, there were no differences in BPAR (19.2% vs. 21.2%, p-0.81), time to first rejection (58 vs. 53 days, p-0.78), patient and graft survival (610 vs. 554 days,p- 0.22). CONCLUSION: Following LDLT, basiliximab induction with tacrolimus and azathioprine maintenance resulted in significantly lower metabolic complications compared to the triple-drug regimen of steroid, tacrolimus, and azathioprine.

Liver Transplant in Acute Liver Failure - Looking Back Over 10 Years.

BACKGROUND: Acute liver failure (ALF) is the leading cause for emergency liver transplantation (LT) all over the world. We looked at the profile of cases who required LT for ALF from a single centre to identify the possible predictors of poor outcomes. METHODOLOGY: During the 10-year period starting from 2007, 320 cases of ALF were treated at our institution, of which 70 (median age 24 years, Male:Female 1:2) underwent LT. Retrospective analyses of these 70 patients were performed. RESULTS: Etiology was identifiable in 73% (n = 51) of cases (yellow phosphorous [YP] poisoning [n = 16], Hepatitis A virus [HAV] [n = 15], Hepatitis B virus [HBV] [n = 5], Hepatitis E virus [HEV] [n = 1], anti-tubercular therapy [ATT] induced [n = 6], acute Wilson's [n = 3], and autoimmune [n = 5]]. Upon meeting King's College Hospital criteria, 69 had live donor LT (61 right lobe grafts, three left lobe grafts, five left lateral segment grafts) and one had deceased donor LT. Among these, there were five auxiliary partial orthotopic grafts and four ABO-incompatible transplants. Overall, 90-day mortality was 35.7% (n = 25), predominantly due to sepsis. Significant risk factors for mortality on multivariate analysis included indeterminate etiology, pre-op renal dysfunction, and Grade IV hepatic encephalopathy (HE). Cumulative 10-year survival of the remaining survivors was 95.6% (n = 45). CONCLUSION: LT for ALF carries high perioperative mortality (35.7%) in those presenting with indeterminate etiology, pre-op renal dysfunction, and Grade IV HE. Nevertheless, if they survive the perioperative period, long-term survival is excellent.

Plasma ghrelin levels after laparoscopic sleeve gastrectomy in obese individuals.

Background & objectives: Ghrelin is an orexigenic gut hormone expressed by the gastric fundus. Laparoscopic sleeve gastrectomy (LSG) procedure involves resection of the gastric fundus leading to a decreased appetite and weight loss. This study was undertaken to determine the levels of plasma ghrelin after sleeve gastrectomy in obese patients. Methods: The study was conducted on 90 morbidly obese patients [body mass index (BMI) >40 kg/m[2]] and severely obese patients (BMI >35/kg/m[2]) who underwent sleeve gastrectomy. The patients were followed up for six months. Weight loss parameters and plasma ghrelin levels were assessed pre- and postoperatively. Results: A significant weight loss and decrease in BMI were observed at three and six months postoperatively. A significant decrease in plasma ghrelin levels over six months of follow up postoperatively was also seen. Interpretation & conclusions: These preliminary findings indicated inhibition of ghrelin production after LSG leading to a decrease in the plasma ghrelin levels within a few days of surgery and sustainable weight loss in obese patients.

Role of Hunger Hormone "Ghrelin" in Long-Term Weight Loss Following Laparoscopic Sleeve Gastrectomy.

INTRODUCTION: Laparoscopic sleeve gastrectomy (LSG) has become a popular weight loss technique in morbidly obese patients. The aim of our study was to evaluate the changes in plasma ghrelin levels in relation to weight loss following LSG and to study the efficacy of LSG in terms of long-term glycemic control and resolution of diabetes. METHODOLOGY: The study was conducted on 70 morbidly obese patients (body mass index [BMI] >40 kg/m2) or severely obese patients (BMI >35 kg/m2) with comorbidities who underwent LSG in Dayanand Medical College and Hospital, Ludhiana, India. Ghrelin levels were measured preoperatively and postoperatively at 1 week, 3 months, and 6 months along with measurements of various weight loss parameters and glycosylated hemoglobin. RESULTS: A significant decrease in plasma ghrelin levels was observed in relation to the mean weight and percentage excess weight loss at 3 months postoperatively. However, at 6 months, fall in ghrelin reached a plateau phase while weight loss was still sustained and significant. There was a significant fall in glycosylated hemoglobin levels with patients achieving good control/resolution of diabetes Type II. CONCLUSION: LSG is an effective weight loss surgery and brings about excellent weight loss in morbidly obese individuals in addition to achievement of good glycemic control in diabetic individuals. Serum levels of ghrelin fall significantly after sleeve gastrectomy. However, long term implications of ghrelin induced weight loss cannot be elucidated.

Living Donor Liver Transplantation Using Small-for-Size Grafts: Does Size Really Matter?

BACKGROUND: In living donor liver transplantation (LDLT), graft-to-recipient weight ratio (GRWR) > 0.8% is perceived as the critical graft size. This lower limit of GRWR (0.8%) has been challenged over the last decade owing to the surgical refinements, especially related to inflow and outflow modulation techniques. Our aim was to compare the recipient outcome in small-for-size (GRWR < 0.8) versus normal-sized grafts (GRWR > 0.8) and to determine the risk factors for mortality when small-for-size grafts (SFSG) were used. METHODS: Data of 200 transplant recipients and their donors were analyzed over a period of two years. Routine practice of harvesting middle hepatic vein (MHV) or reconstructing anterior sectoral veins into neo-MHV was followed during LDLT. Outcomes were compared in terms of mortality, hospital stay, ICU stay, and occurrence of various complications such as functional small-for-size syndrome (F-SFSS), hepatic artery thrombosis (HAT), early allograft dysfunction (EAD), portal vein thrombosis (PVT), and postoperative sepsis. A multivariate analysis was also done to determine the risk factors for mortality in both the groups. RESULTS: Recipient and donor characteristics, intraoperative variables, and demographical data were comparable in both the groups (GRWR < 0.8 and GRWR ≥ 0.8). Postoperative 90-day mortality (15.5% vs. 22.85%), mean ICU stay (10 vs. 10.32 days), and mean hospital stay (21.4 vs. 20.76 days) were statistically similar in the groups. There was no difference in postoperative outcomes such as occurrence of SFSS, HAT, PVT, EAD, or sepsis between the groups. Thrombosis of MHV/reconstructed MHV was a risk factor for mortality in grafts with GRWR < 0.8 but not in those with GRWR > 0.8. CONCLUSION: Graft survival after LDLT using a small-for-size right lobe graft (GRWR < 0.8%) is as good as with normal grafts. However, patency of anterior sectoral outflow by MHV or reconstructed MHV is crucial to maintain graft function when SFSG are used.

A New Score to Predict Recipient Mortality from Preoperative Donor and Recipient Characteristics in Living Donor Liver Transplantation (DORMAT Score).

BACKGROUND Recipient outcomes in adult living donor liver transplantation depend on various characteristics in both recipient and donor. We aimed to derive a score based upon preoperative characteristics in donor and recipient that could predict the recipient mortality in adult living donor liver transplantation. MATERIAL AND METHODS Retrospective data of 100 living donor liver transplantation recipients and their respective donors were analyzed for preoperative factors that correlated with recipient mortality. Statistically significant factors were weighted appropriately to derive a regression equation to obtain a donor-to-recipient match (DORMAT) score. This score was applied to 71 patients prospectively and their outcome was analyzed. RESULTS Donor-recipient match (DORMAT) score, derived using regression analysis of the significant variables was [0.002 (Recipient age) + 0.013 (Recipient BMI) + 0.055 (SBP) + 0.344 (HRS) + 0.022 (Pre-op culture positivity) + 0.01 (Donor age) - 0.639]×100. DORMAT score, when validated to a prospective cohort of 71 adult-to-adult LDLT patients, had a C-statistic (area under ROC curve) of 0.712. The mortality rate was seen to increase with increasing DORMAT score. CONCLUSIONS DORMAT score is a useful clinical decision-making tool to predict recipient mortality in adult living donor liver transplantation.

Role of Multi Detector Computed Tomography (MDCT) in Preoperative Staging of Pancreatic Carcinoma.

INTRODUCTION: Pancreatic carcinoma is one of the leading causes of cancer related death in advanced countries and has shown rising trends in developing countries like India. Increase in the incidence has been linked to risk factors like lifestyle modification associated with increased alcohol consumption and rapid urbanization. Most patients at the time of diagnosis present with an advanced condition. Surgical resection offers the only chance for cure in them and imaging plays a crucial role in the early diagnosis of the condition. AIM: To compare the staging of pancreatic carcinoma by MDCT (Multi Detector Computed Tomography) with surgery in a preoperative setting in a tertiary referral centre in Kerala. MATERIALS AND METHODS: A cross-sectional observational study was performed between November 2014 and October 2016, 25 patients (12 men, 13 women), with a mean age of 54.2 years, were evaluated. MDCT was performed using 16 slice, 64 slice and 256 slice multi detector CT machines. The gold standard for diagnosis was histopathology and operative data. All statistical analysis was done using IBM SPSS version 20.0. Validity parameters like sensitivity, specificity, accuracy and Positive Predictive Value (PPV) / Negative Predictive Value (NPV) were computed for MDCT with respect to surgery. RESULTS: Of the 25 patients who were evaluated for surgery, 15 (60%) cases were classified as resectable tumours, 3 (12%) as borderline resectable and 7 (28%) as unresectable tumours. CT showed a sensitivity of 82.3% with a specificity of 87.5%. However, for assessing vascular invasion, CT showed sensitivity and specificity of 100% and 93.3% respectively. Three (12%) patients in the study who were classified as borderline resectable pancreatic tumours underwent surgery. CONCLUSION: Contrast-enhanced multiphase pancreatic imaging using MDCT plays a pivotal role in diagnosing and assessing resectability and vascular invasion of pancreatic tumours. It is very useful for determining borderline resectable tumours pre-operatively, which aids for better treatment planning.

Cystic artery pseudoaneurysm following acute necrotising pancreatitis.

Cystic artery pseudoaneurysm is a rare pathology. Of the 20 cases reported so far, chronic cholecystitis and iatrogenic biliary injury form the majority of causes. Currently, there is no published report of such pseudoaneurysms caused secondary to pancreatitis, hence the management in such a scenario is unclear. We hereby present the first such report of cystic artery pseudoaneurysm occurring as a sequel of acute necrotising pancreatitis. A 33-year-old man who recovered from a recent attack of acute pancreatitis was readmitted for melena and fever. Computed tomography of abdomen revealed blood in the gall bladder with pericholecystic blush and resolving pancreatic necrosis. Percutaneous transarterial embolisation of the cystic artery was done. This stabilised the patient but persistent sepsis and clinical deterioration warranted a surgical exploration and cholecystostomy. Hence, transarterial embolisation followed by surgery in selected cases can be an ideal management protocol.

Effects of Laparoscopic Sleeve Gastrectomy on Central Obesity and Metabolic Syndrome in Indian Adults- A Prospective Study.

INTRODUCTION: Increasing incidence of obesity in Indian population has led to an exponential rise in the number of bariatric operations performed annually. Laparoscopic Sleeve Gastrectomy (LSG) has been proposed to cause rapid remission of Type 2 Diabetes Melitus (T2DM) and metabolic syndrome in a weight loss independent manner. AIM: To evaluate the effects of LSG on metabolic syndrome and central obesity in morbidly and severely obese Indian adults. Material and Methods: Study was conducted on 91 morbidly obese [Body Mass Index (BMI)>40 kg/m2] and severely obese (BMI>35 kg/m2) individuals who were suffering from diabetes, hypertension or dyslipidemia. The patients were followed up for six months and the trends of glycaemic control, mean blood pressure, lipid profile, weight loss parameters and changes in parameters of central obesity were studied. RESULTS: Weight loss was significant at three months postsurgery and was sustained through six months. There was significant improvement in glycaemic control leading to reduction in need for oral hypoglycaemic agents or insulin in majority of them and even discontinuation of these medications in few patients. Hypertension and dyslipidemia also showed an improving trend through six months postsurgery. There was a significant impact on reduction of central obesity in these patients as marked by significant reduction in waist to hip ratio. CONCLUSION: LSG produces sustainable weight loss with significant improvement in glycaemic status and control of metabolic syndrome in severe to morbidly obese patients. LSG is also efficacious in reducing central obesity in Indian population which is a major depressive ailment amongst obese individuals.

Fulminant zygomycosis of graft liver following liver transplantation.

A 44-year-old man with hepatitis B virus (HBV)-related cirrhosis underwent living donor liver transplantation at our institute. Induction of immunosuppression was achieved with basiliximab, due to deranged renal function, and maintained with prednisolone, tacrolimus and mycophenolate mofetil. The intraoperative and immediate postoperative periods were fairly uneventful. A duplex scan, taken during the third week post-transplantation due to sudden rise in liver enzymes, revealed multifocal hypoechoic lesions in the graft liver with normal Doppler parameters. Multidetecor computed tomography (MDCT) showed multiple hypodense vessel-sparing lesions in the graft liver. Cultures from the aspirate grew filamentous fungi identified as Basidiobolus ranarum species. Despite multiple broad spectrum antifungal infusions including liposomal amphotericin, itraconazole, caspofungin and posaconazole, serial sonography showed the hepatic lesions increasing in size, and involving segments V, VI and VII. The patient developed severe liver dysfunction ultimately progressing to sepsis, multiorgan dysfunction and death.

Experience with uroflowmetry in evaluation of lower urinary tract symptoms in patients with benign prostatic hyperplasia.

INTRODUCTION: Uroflowmetry is a non- invasive urodynamic tool which is widely used for most of the patients with suspected lower urinary tract dysfunction. The severity of lower urinary tract symptoms (LUTS) can be measured reliably by using a number of validated questionnaires, like International Prostate Symptom Score (IPSS). This study was designed to determine the relationship between the parameters of uroflowmetry and symptom severity. MATERIALS AND METHODS: Fifty patients with LUTS caused by benign prostatic hyperplasia were evaluated by using uroflowmetry, IPSS, prostate volume estimation. The correlations between these parameters were quantified by means of Spearman correlation co-efficients. RESULTS: Statistically significant correlations were found between the IPSS and results of uroflowmetry (peak flow rate and average flow rate) and post void residual urine. No correlation was found between the IPSS and results of prostate volume measurements. CONCLUSION: There was a positive correlation between peak flow rate, as was measured by uroflowmetry and lower urinary tract symptom severity.