Hepatitis B virus (HBV) infection is the most common chronic viral infection in the world. Despite the availability of a preventative vaccine, more than 250 million people worldwide are chronically infected with HBV. The complications of chronic HBV infection—cirrhosis and hepatocellular cancer (HCC)—account for more than 850,000 deaths per year. HBV is transmitted haematogenously and sexually, with the majority of HBV infections being transmitted vertically (or perinatally) in high prevalence regions. HBV infection acquired at birth or in early childhood results in chronicity in >95% of cases, whereas only 5–10% of those who are infected in adulthood will progress to chronic infection. 

Ulcerative colitis (UC) is a lifelong inflammatory bowel disease (IBD) of unknown origin characterized by alternating flare and remission periods. An acute severe episode, so-called acute severe UC (ASUC), may happen in approximately one-quarter of patients during their life.1 Notably, more than 25% of ASUC episodes correspond to the index presentation of the disease. Patients with ASUC should be promptly identified by the modified Truelove and Witts criteria recommended by the most recent international guidelines and admitted rapidly to a digestive unit. Indeed, ASUC is a life-threatening condition still leading to a 1% death rate in Western countries. In the current article, we will discuss the most frequent and/or relevant mistakes in managing patients admitted for an ASUC episode and how to avoid them. The manuscript is based on the available evidence and expert opinion when evidence is lacking.

The complexity of managing inflammatory bowel disease (IBD) stems from the heterogeneity of Crohn’s disease and ulcerative colitis. This leads to differences in disease course, complications, and treatment responses among patients. Current treatment strategies rely on a trial-and-error approach, but there's a need for personalized therapy. Efforts have been made to develop reliable prognostic and predictive biomarkers to overcome disease heterogeneity. This article discusses common mistakes in biomarker development, interpretation, and application in IBD, emphasizing evidence-based insights and lessons learned from other fields.

Jaundice can be caused by abnormalities in any of the steps comprising the formation, metabolism and excretion of bilirubin. In addition, these processes may be functioning properly, but jaundice can be seen because of an obstruction of the biliary tree at any point, from its intrahepatic origins to its end at the ampulla of Vater. For this reason, it is clear that numerous conditions can result in jaundice. When faced with a patient presenting with jaundice a reasonable and careful diagnostic approach is, therefore, warranted to elucidate the underlying cause of this sign. Conventional wisdom may be that “jaundice by itself never killed anyone,” but it is imperative to find the cause as soon as possible, as prompt intervention saves lives in many cases.

Children and adolescents with chronic diseases requiring lifelong care face unique challenges that affect their daily lives and those of their families. Initially, these patients receive specialized care in pediatric facilities, where parents play a key role in treatment decisions. However, transitioning to adult healthcare facilities is inevitable, and this process, recognized as crucial years ago, involves moving adolescents with chronic conditions from child-centered to adult-oriented care. This transition can be complicated by varying age limits for pediatric care and the scarcity of adult care centers with specific expertise. The transition often requires cooperation between different centers or even countries due to patient mobility. The transition phase is critical, as it can lead to loss of follow-up, treatment suspension, and increased risks of complications or disease relapse. Beyond medical management, various factors influence the long-term prognosis of chronic conditions, making a well-organized transition program essential. While many hospitals have implemented transition models with mixed results in satisfaction, disease control, and follow-up adherence, there are frequent shortcomings in the process. This Mistakes In article will outline eight common mistakes made during the transition from pediatric to adult care, supported by literature and professional experience.