Is Marginal Donor an Efficient Solution for Expanding the Donor Pool for Liver Transplant?

Once the techniques of hepatobiliopancreatic surgery improved, liver transplantation widely extended in different hospitals; therefore, the need of grafts and automatically of liver donors reported a significant increase in the last decade. In this respect, attention was focused on increasing the liver donor pool. The aim of this review is to study the benefits of using marginal grafts in liver transplantation. With the advent of multiple methods of liver preservation, the use of grafts previously considered unsuitable has become possible. Thus, extended allocation criteria have emerged. However, the allocation of these grafts must be carefully considered and analyzed in the context of both recipient and donor factors.

Recurrence and Carcinogenetic Rates of Colorectal Polyps.

AIM: to determin the recurrence rate of benign recto-colonic polyps in a 5-year interval, and compare the development rate of intrapolypoid carcinomatous lesions in polypectomized versus nonpolypectomized subjects. MATERIAL AND METHOD: a group of 77 patients diagnosed with recto-colonic polypoid lesions during the period 2014-2019 underwent colonoscopy at the time of study initiation and then annually during a five-year interval. Results: The recurrence rate of polyps increased annually from 5 to 12.5%; the highest rate was noted in the last two years. The five-year cumulative risk of neoplastic lesions was 73% in patients without polypectomy and 20% among those with endoscopic resection (p 0.05). Comparing the recurrence rate of benign lesions (60%) in patients without neoplastic findings with the recurrence rate of adenomas in patients with benign lesions (40%), a higher risk of recurrence was found in the first category, and seemed to be influenced by the personal history of pre-existing adenomatous lesions. CONCLUSION: an increased risk of colorectal polyps recurrence was reported during five year follow up; moreover, during the first three years an increased risk of malignant transformation was observed among cases in which endoscopic resection was not feasible when compared to those in which complete excision was feasible.

Prognostic Factors in Intrahepatic Cholangiocarcinoma - A Systematic Review.

Introduction: intrahepatic cholangiocarcinoma (ICCA) are rare, aggressive cancers that develop in second order or smaller bile ducts. The aim of this review is to systematically review the most important prognostic factors affecting the long-term outcomes of these patients. Material and Methods: articles conducted on this issue, written in English, published between from January 2000 to December 2023 in Cochrane Library, PubMed, Embase, MedLine, Web of Science, Elsevier, Google Scholar were systematically researched and reviewed. Results: ICCA are usually late diagnosed cancers because of the asymptomatic character, and curative procedures are often not feasible, only 20 to 30% of patients being fit for surgery. With the prognostic of this aggressive malignancy being baleful, the most important risk factors but also prognosis factors seem to be represented by socioeconomic factors, morphological presentation, dimensions, number and extension of the tumor as well as resection margins. Conclusions: once these factors are widely recognized and identified in each case, the clinician will be able to find the best treatment for these patients in order to improve the long-term outcomes.

Prognostic Significance of Preoperative Inflammation Markers on the Long-Term Outcomes in Peritoneal Carcinomatosis from Ovarian Cancer.

Ovarian cancer remains one of the most lethal gynaecological malignancies affecting women worldwide; therefore, attention has been focused on identifying new prognostic factors which might help the clinician to select cases who could benefit most from surgery versus cases in which neoadjuvant systemic therapy followed by interval debulking surgery should be performed. The aim of the current paper is to identify whether preoperative inflammation could serve as a prognostic factor for advanced-stage ovarian cancer. Material and methods: The data of 57 patients who underwent to surgery for advanced-stage ovarian cancer between 2014 and 2020 at the Cantacuzino Clinical Hospital were retrospectively reviewed. The receiver operating characteristic curve was used to determine the optimal cut-off value of different inflammatory markers for the overall survival analysis. The analysed parameters were the preoperative level of CA125, monocyte-to-lymphocyte ratio (MLR), platelet-to-lymphocyte ratio (PLR), neutrophil-to-lymphocyte ratio (NLR) and systemic inflammation index (SII). Results: Baseline CA125 > 780 µ/mL, NLR ≥ 2.7, MLR > 0.25, PLR > 200 and a systemic immune inflammation index (SII, defined as platelet × neutrophil-lymphocyte ratio) ≥ 84,1000 were associated with significantly worse disease-free and overall survival in a univariate analysis. In a multivariate analysis, MLR and SII were significantly associated with higher values of overall survival (p < 0.0001 and p = 0.0124); meanwhile, preoperative values of CA125, PLR and MLR were not associated with the overall survival values (p = 0.5612, p = 0.6137 and p = 0.1982, respectively). In conclusion, patients presenting higher levels of MLR and SII preoperatively are expected to have a poorer outcome even if complete debulking surgery is performed and should be instead considered candidates for neoadjuvant systemic therapy followed by interval surgery.

Tumor microenvironment in Hodgkin lymphoma: novel prognostic factors for assessing disease evolution.

Hodgkin lymphoma (HL) has become one of the most curable hematological neoplasia. Clinical and biological factors remain the main pillars guiding therapeutic strategies in HL. Recent studies have improved our understanding of the phenotype, the characteristics of histogenesis, and other possible mechanisms of lymphomagenesis, including the role of Epstein-Barr virus (EBV) infection. Tumor cells manipulate the microenvironment, allowing them to develop their malignant phenotype and evade the attack of the host's immune response so that the interaction between tumor cells and the reactive microenvironment determines not only the histological features but also the clinical-pathological characteristics and prognosis of these patients - essential for the development of future therapies targeting various other cellular components of the tumor microenvironment. This article aimed to evaluate the characteristics of the tumor microenvironment and malignant cells using histopathology and immunohistochemistry (IHC) techniques to highlight the association of EBV and to study the expression of characteristic antigens in malignant and non-malignant cells within the tumor mass (overexpression of BCL2 (B-cell lymphoma 2) in malignant cells, presence of PD1 (Programmed cell death Protein 1) on T lymphocytes, CD68+ macrophages in the tumor microenvironment, and presence of EGFR (epidermal growth factor receptor). The analysis of the data collected in this paper highlights several key parameters with prognostic value and statistical significance: the EBV infection at diagnosis, its association with low-intensity BCL2(+), the presence of CD68 with rosette formation, and the identification of specific vascularization patterns. The development of prognostic systems that take into account the integration of biological prognostic markers seems essential for a better risk stratification.

Post-COVID-19 syndrome: Insights into a novel post-infectious systemic disorder.

Coronavirus disease 2019 (COVID-19) is currently considered a complex systemic infectious and inflammatory disease, determined by the infection with severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), and the cause of one of the most important epidemiological phenomena in the last century - the COVID-19 pandemic. This infectious-inflammatory disease may generate a wide range of clinical manifestations and biological modifications, explained by the ubiquitous nature of the SARS-CoV-2 receptors, represented by the angiotensin-converting enzyme-2 (ACE-2), and by the host's violent immune and proinflammatory reaction to the viral infection. These manifestations include immunological disturbances, which, according to certain clinical findings, may persist post-infection, in the form of a presumed systemic inflammatory entity, defined by several clinical concepts with a common pathological significance: post-COVID-19 multisystem (or systemic) inflammatory syndrome, post-COVID syndrome or long-COVID. Although the pathophysiological mechanisms of the post-COVID-19 syndrome are elusive at the present moment, there are currently several studies that describe a systemic inflammatory or autoimmune phenomenon following the remission of the COVID-19 infection in some patients, which suggests the existence of molecular and cellular immune abnormalities, most probably due to the host's initial violent immune response to the viral infection, in the form of three overlapping entities: secondary hemophagocytic lymph histiocytosis (HLH), macrophage activation syndrome (MAS) and cytokine release syndrome (CRS). Thus, this is reminiscent of different classic autoimmune diseases, in which various infections are risk factors in developing the autoimmune process.

Intrahepatic Cholangiocarcinoma - Where Do We Stand Today? Literature Review.

Intrahepatic cholangiocarcinomas represent rare and aggressive malignancies developing from the second order bile ducts to the smaller biliary branches. The aim of this narrative review is to discuss about the main diagnostic and therapeutic challenges in order to help medical and surgical oncologists to gain familiarity in regard to this subject. Articles discussing about epidemiology, histology, diagnostic, perioperative management and surgery which were published from January 2000 to September 2023 included in Cochrane Library, PubMed, Embase, MedLine, Web of Science, Elsevier, Google Scholar databases were reviewed. Articles reviewed in the current paper came to demonstrate that the main problem in such cases is related to the fact that most cases remain asymptomatic for a long period of time and therefore are diagnosed in advanced stages of the disease when curative procedures are feasible after performing extended visceral sacrifice or even worse, are no longer possible; however, the most efficient therapeutic strategy in order to improve the long term outcomes remains radical surgery. In this respect, attention was focused on improving the accuracy of the diagnostic tools and on identifying non-surgical therapeutic options which might increase the chances of achieving complete resection. Intrahepatic cholangiocarcinoma represent rare aggressive tumors with poor outcomes especially if radical surgery is not feasible.

Effects of Exercise in Improving Cardiometabolic Risk Factors in Overweight Children: A Systematic Review and Meta-Analysis.

This meta-analysis aims to evaluate the effects of exercise in improving cardiometabolic risk factors in overweight children and adolescents until the adolescent age, which is 18 years. A systemic search was conducted using the electronic databases PubMed/Medline, Cochrane Library, and Google Scholar, from inception to 29 June 2021. All statistical analyses were conducted in Review Manager 5.4.1. All studies meeting the inclusion criteria were selected. A random-effect model was used to pool the studies, and the results are reported in the odds ratio (OR) and corresponding 95% Confidence interval (CI). Twelve randomized control trials were selected for meta-analysis. Significant results were obtained for BMI in children after the interventions (0.38 95% CI 0.14, 0.62; p = 0.002; I2 = 65%). LDL level was also found significantly reduced (0.41 95% CI 0.01, 0.82; p = 0.05; I2 = 83%). Other factors such as HDL level, blood pressure, blood glucose level, body weight, and waist circumference were also analyzed. We found that exercise interventions significantly improved several cardiometabolic risk factors such as BMI, LDL level, BP, and blood glucose level. However, no significant effect on HDL concentration, waist circumference, and body weight were found. Long-term interventions are needed to attain improvement in all cardiometabolic risk factors.

Current Trends on Glomerulosclerosis Regression.

The role of the renin-angiotensin system in hypertension and end-organ damage has long been recognized. Angiotensin l converting enzyme inhibitors are superior to other antihypertensive agents in protecting the kidney against progressive deterioration, even in normotensive persons. Likewise, angiotensin II type 1 receptor antagonists improve or even reverse glomerulosclerosis in rat animal models. These findings suggest that Angiotensin II has nonhemodynamic effects in progressive renal disease. The renin-angiotensin system is now recognized to be linked to the induction of plasminogen activator-inhibitor-1, possibly via the AT4 receptor, thus promoting both thrombosis and fibrosis. Interactions of the renin-angiotensin system with aldosterone and bradykinin may impact both blood pressure and tissue injury. The beneficial effect on renal fibrosis of inhibiting the renin-angiotensin system likely reflects the central role that angiotensin has in regulating renal function and structure by its various actions. This article explores the renin-angiotensin-aldosterone system with plasminogen activator-inhibitor-1 interaction and the potential significance of these interactions in the pathogenesis of progressive renal disease and remodeling of renal sclerosis.

Malignancy and mortality of colorectal polyps.

OBJECTIVES: To evaluate the rate of morbidity and mortality associated with colorectal polyps after the next 8-years period of endoscopic polypectomy, in a high risk managed care population. MATERIAL AND METHOD: Cohorts of 77 subjects with benign neoplasms were identified with a colonoscopy in 1999. Three groups of subjects: benign neoplasms with polypectomy, benign neoplasms without polypectomy, and no neoplasms were evaluated. Five years recurrence rates (1999-2004) of benign or new malignant colorectal neoplasms were identified: for the benign determined for the baseline benign neoplasms with polypectomy and no neoplasm groups neoplasm without polypectomy, only rates for malignancy were observed. Malignancy was evaluated with immunohistochemical p53 (tumor protein 53) and PCNA (Proliferating Cell Nuclear Antigen) staining pattern. Over the next 8 years 2004-2012 were evaluated the mortality and the recurrence rate of the benign polyps. RESULTS: 77 subjects were enrolled in our study; 71.4% were diagnosed with benign and 2.5% with malignant neoplasms. The 5-years cumulative incidence rates of malignant colorectal neoplasms in the no neoplasm (n = 20) and benign neoplasm groups (n = 55) were (n = 1) 5% and ( n = 10) 18.1%, respectively (p < 0.005). A lower 5-years malignancy rate was observed in benign neoplasms group with polypectomy (12%) compared to the benign neoplasm group without polypectomy (33.3%) (p < 0.05). The 8-years mortality rate was compared into benign recurrent polyps group and into malign group: the lower 8-years mortality rate was observed into benign polyp no neoplasm group (0%) and into benign recurrent polyps group (40%); the highest rate was observed into neoplasm group (100%). CONCLUSIONS: The high recurrence rate of benign colorectal neoplasms and a higher incidence of colorectal cancer in subjects at high risk-history of benign colorectal neoplasm-highlight a healthcare opportunity for surveillance and/or interventions to reduce the morbidity associated with colorectal neoplasms.

Composite diffuse large B-cell lymphoma and follicular B-cell lymphoma - case report and review of literature.

Composite lymphoma refers to the co-occurrence of two or more morphologically and immunophenotypically separate lymphomas in the same topographic site at the time of clinical presentation. It is an infrequent type of lymphoid neoplasm, present in lymphoid tissue and may be due to the existence of two genetically related neoplasms such as transformation of a single lymphoma into another more aggressive lymphoma or be due to the presence of two clonally unrelated lymphomas. This paper is presenting a case of diffuse non-Hodgkin large B-cell lymphoma with areas of low grade and high grade follicular non-Hodgkin B-cell lymphoma in a retroperitoneal lymph node and spleen of an 62 year old woman. Histopathological examination and immunohistochemistry features proved the diagnosis of composite lymphoma.

The role of distubances of phosphate metabolism in metabolic syndrome.

BACKGROUND: Metabolic syndrome represents a cluster of cardiovascular risk factors that has become a public health problem of epidemic proportions. It was proposed that disturbances in phosphate metabolism may represent a key feature of metabolic syndrome, with a high contribution of cardiovascular risk factors. OBJECTIVES: The aim of the study is to investigate the relationship between phosphate levels and the presence of the characteristics of metabolic syndrome, as well as the mechanisms that may responsible for reduced phosphate levels in patients with metabolic syndrome. METHODS: One hundred fifty five subjects are enrolled in the study: 64 with metabolic syndrome and 91 without this syndrome. Biochemical parameters of the metabolic syndrome study populations were compared with healthy population study. RESULTS: Patients with metabolic syndrome showed significantly lower phosphate (46%) and magnesium levels compared with controls (22.7%) (p<0.001).Because fractional excretion of phosphate was similar in both groups, we think that hypophosphatemia in patients with metabolic syndrome can be attributed to decreased dietary intake, as well as internal redistribution of this element. Lower magnesium hyperinsulimemia-induced renal magnesium wasting also may be a contributory factor. CONCLUSIONS: Patients with metabolic syndrome show significantly lower phosphate and magnesium concentrations compared with individuals who do not fulfill criteria for diagnosis of this syndrome. This reduction is likely to be attributed to reduced dietary intake and internal redistribution of phosphate and is more pronounced as the number of components of metabolic syndrome increases. The clinical significance of these disturbances, as well as their importance as targets for preventive or therapeutic interventions, remains to be established.

A clinical approach in regression of glomerulosclerosis.

The role of the renin angiotensin system (RAS) in hypertension and end organ damage has long been recognized. Angiotensin 1 converting enzyme inhibitors (ACEI) are superior to other antihypertensive agents in protecting the kidney against progressive deterioration, even in normotensive persons. Like ACEI, angiotensin II type 1 receptor antagonists (AT1RA) ameliorate or even reverse glomerulosclerosis in rat animal models. These findings suggest that Angiotensin II (Ang II) has nonhemodynamic effects in progressive renal disease. The RAS is now recognized to be linked to induction of plasminogen activator-inhibitor-1 (PAI-1), possibly via the AT4 receptor, thus promoting both thrombosis and fibrosis. Interactions of the RAS with aldosterone and bradykinin may have an impact on both blood pressure and tissue injury. The beneficial effect on renal fibrosis of inhibiting the RAS likely reflects the central role that angiotensin has in regulating renal function and structure by its various actions. This article explores the interaction of the renin angiotensin aldosterone system with PAI-1, and the potential significance of these interactions in the pathogenesis of progressive renal disease and remodeling of renal sclerosis.