Incidental liver lesions are increasingly found due to the incremental use of cross-sectional imaging. They encompass a large group of benign and malignant lesions, and the combined use of different imaging modalities is often required to make an accurate diagnosis. It is of utmost importance for clinicians and radiologists to be familiar with each imaging modality's strengths and limitations and be aware of common pitfalls that can confound the correct interpretation of findings. The article will discuss eight common mistakes in the interpretation and acquisition of radiological images. Recommendations on avoiding these mistakes will be based on clinical experience and literature where possible. As MRI plays an essential role in the characterisation of liver lesions, a standard MRI protocol with a brief explanation of the sequences has been added for reference

Barrett’s oesophagus is a premalignant condition of the distal oesophagus predisposing to oesophageal adenocarcinoma. Given the potential for malignant progression and the poor prognosis of eosophageal adenocarcinoma when diagnosed at a symptomatic stage, patients with known Barrett oesophagus undergo regular endoscopic surveillance to detect neoplastic progression at an early and preferably endoscopically, treatable stage. Endoscopic management of early Barrett oesophagus neoplasia consists of a combination of endoscopic imaging, endoscopic resection and endoscopic ablation. Below we discuss a number of mistakes that are frequently made when managing Barrett oesophagus neoplasia and how to avoid them. Much of this discussion draws on existing guidelines (for background reading, check the ESGE Barrett oesophagus guideline), but in many instances the underlying evidence (even in the guideline) is missing and therefore many of our practically driven recommendations are based on common sense and our experience in this field.

Coeliac disease is an autoimmune disorder triggered by gluten, which activates an immune reaction against the autoantigen tissue transglutaminase (TG2) in genetically predisposed subjects. Genetic susceptibility to coeliac disease has been proven by its close linkage with major histocompatibility complex (MHC) class II human leukocyte antigen (HLA) DQ2 and DQ8 haplotypes. The identification of biomarkers for coeliac disease (e.g. endomysial antibodies [EmA] and antibodies to TG2 [anti-TG2]) has changed the epidemiology of coeliac disease from being a rare to a frequent condition, with an expected prevalence of 1% in the worldwide population. Coeliac disease can be difficult to diagnose because symptoms vary from patient to patient, and the majority of patients who have coeliac disease remain undiagnosed. Small intestinal biopsy remains the gold standard for coeliac disease diagnosis, and a delayed diagnosis in the elderly can be considered a risk factor for complications. Complicated coeliac disease is not so frequent, but for those who have it, the prognosis is very poor, with a low rate of survival after 5 years.