BACKGROUND Tick-borne diseases, including Lyme disease, are becoming increasingly common in Europe. Lyme disease has a wide variety of clinical manifestations, as a result of which physicians of diverse disciplines are coming into contact with such patients. CASE DESCRIPTION A 58-year-old man was seen at the emergency room with a symptomatic Wenckebach-type second-degree atrioventricular (AV) block and periods of 21 AV block. Four weeks previously the patient had noticed a red skin lesion on his left lower leg. Under the working diagnosis of early disseminated Lyme disease with cardiac involvement, treatment with ceftriaxone was started. This diagnosis was supported by a positive Borrelia PCR and culture of a skin biopsy and positive Borreliaserology. The AV conduction disorders resolved completely after 2 weeks of treatment with antibiotics and it was not necessary to implant a pacemaker. CONCLUSION A Borrelia infection is a reversible but rare cause of AV conduction disorders. In the event of sudden onset of symptoms or a severe or progressive AV conduction disorder, Lyme carditis should be considered, especially if the medical history or physical examination provides clues for Lyme disease.We describe three cases, two 70-year-old males with mainly cardiac symptoms and a 34-year-old male with gastro-intestinal and neurologic symptoms. Each patient was shown to have a distinctive type of transthyretin-mediated amyloidosis (ATTR). ATTR amyloidosis is a life-threatening disease characterised by the extracellular deposition of pathogenic transthyretin (TTR). A distinction is made between hereditary ATTR (ATTRv), in case of a pathogenic TTR mutation, and the acquired wild-type ATTR (ATTRwt). The prevalence of ATTR amyloidosis is probably underestimated. The variety of symptoms means that patients often visit several specialists, resulting in an average diagnostic delay of two to three years. Because of the development of new therapeutic possibilities, early diagnosis becomes more important to allow initiation of therapy at an early stage of the disease. Family members should be screened and asymptomatic carriers should undergo follow-up.BACKGROUND Clostridium tetani is a gram-positive spore-forming bacterium that produces toxins and grows under anaerobic conditions. Infections with this bacterium can lead to local or generalised forms of tetanus. CASE DESCRIPTION An 83-year-old man presented to the acute cardiac care unit with a painful left arm and jaw. Because the patient had a hypertonic left arm and was unable to open his mouth fully, the neurologist was consulted. The patient had been to the emergency department 9 days earlier for an infected wound after falling in the garden. He had not been actively or passively immunised against tetanus at that time. On inquiry, it appeared that the patient had also not been vaccinated as a child. We made a clinical diagnosis of tetanus. The patient was admitted and treated with tetanus immunoglobulin, metronidazole, diazepam and painkillers. He was also administered tetanus toxoid and the wound was cleaned. After 1 month and 7 months, the patient was again administered tetanus toxoid. CONCLUSION Patients with a wound that may have come into contact with road grime, dirt or manure, should always be asked for their vaccination status, especially people from high-risk groups, such as the elderly.Rheumatoid arthritis (RA), one of the most common autoimmune disorders, mostly manifests itself as polyarthritis. However, extra-articular organ manifestations can also occur, even though their incidence has decreased substantially due to effective treatment with disease-modifying anti-rheumatic drugs. In this article we describe three patient cases of extra-articular manifestations in RA in the absence of prominent arthritis. The diversity of symptoms in RA can be of interest to different medical specialties who will occasionally encounter them in daily practice.BACKGROUND When an odontogenic infection extends into the neck, a life-threatening situation may develop as a result from airway obstruction, sepsis or mediastinitis. However, this is quite rare. Prompt treatment is important to minimise these complications. CASE DESCRIPTION A 49-year-old woman presented to the oral and maxillofacial surgery outpatient clinic of a general hospital with extensive abscesses in the neck after a molar extraction. Because of the aggressive course of the disease, the patient was transferred to a university hospital. After several surgeries, during which the neck was widely opened and drained, tracheostomy and admission to the intensive care department, the infection was under control. CONCLUSION In case of a patient with a progressive swelling in the neck, an odontogenic cause should be considered. When, in addition to the swelling, there are also signs of worsening, such as fever, swallowing problems and locked jaw, the patient should be urgently referred to an oral and maxillofacial surgeon.PCSK9 inhibitors are monoclonal antibodies that target the protein PCSK9. These drugs (alirocumab and evolcumab) are a new generation of cholesterol-lowering agents for patients with a very high risk of cardiovascular disease. They lower the LDL cholesterol concentration by approximately 50% in comparison with placebo, thereby lowering the risk of myocardial infarction, stroke and cardiovascular death in high-risk patients. Due to their high cost and the cost-effectiveness, there are strict conditions for reimbursement for these agents in the Netherlands. PCSK9 inhibitors can be given to high-risk patients in whom, despite maximal medicinal therapy with statins and ezetimibe, the target level of LDL cholesterol cannot be reached. This article gives an overview of the efficacy and the safety of PCSK9 inhibitors, and of their use in the Netherlands.Allergies to cats and dogs are common. This is a problem, since many people would like to have a pet. This is why so-called ‘hypoallergenic’ dogs and cats are popular. In this article, we show that the existence of these ‘hypoallergenic’ animals is actually a myth and that these animals are not a good option for people who are allergic to those pets. We also especially describe the negative consequences for the wellbeing of cats and dogs because of their specific external characteristics and the way in which they are bred.In 2019, 1 in 4 deaths was caused by infectious diseases. In addition to the big 3 – HIV, malaria and tuberculosis – these diseases are mainly respiratory infections, infectious diarrhoea and sepsis. The burden of disease caused by infections also remains high in the Netherlands. This could still get worse because of several factors ageing, ‘vaccination doubts’, increased use of immunosuppressive drugs, increased mobility of people and globalisation of food chains. Global warming also affects the spread of pathogens and disease vectors. Pathogens have an impressive ability to adapt and, for example, to develop resistance to antimicrobial agents. In order to cope with these threats, we would do well to consider the emergence of new infectious diseases as well as the threat of old ones. selleck chemicals What can we learn from decades past? Why do new infections keep emerging? What does the future look like?A 7-year-old boy presents at the Emergency Department with an abdominal swelling after an accident with a space scooter. He was diagnosed with a traumatic anterior abdominal wall hernia, for which he underwent surgical correction.Amongst the various blood-safety measures to prevent blood-transmitted infections in transfusion recipients, the most important are the selection of blood donors and the testing for infections of the donations. A look-back procedure aims to inform hospitals about potentially infected blood products and to trace the relevant recipients. The opposite, reverse look-back, can also occur following a report that a patient has an infection of which blood transfusion may be the possible source, all possibly implicated donors will be screened for the particular agent. Over the period 2007-2017, 84 look-backs were carried out by the Dutch blood product organisation Sanquin. Transmission via blood products of the human immunodeficiency virus, hepatitis C virus, human T-cell Lymphotropic virus or Treponema pallidum were not found. Look-back identified four recipients with hepatitis-B virus infection. These recipients had received a blood product from donors with an occult chronic hepatitis-B virus infection. In the Netherlands, the risks associated with transmission of infection through blood products are minimal; however, transmission may still occur, despite extensive blood-safety measures.A 52-year-old woman presented with fever and a persisting calf abscess ten years after she had received an aorta-bifemoral bypass. Her infection parameters were increased and she had anaemia. CT of the abdomen revealed air surrounding the proximal anastomosis of the bypass suggesting bypass graft infection. The diagnosis of an aorta-duodenal fistula was confirmed by gastroduodenoscopy showing migration of the bypass through the wall of the duodenum into the intestinal lumen. The bypass was resected and reconstructed using the superficial femoral vein. The patient recovered uneventful.OBJECTIVE Consultations between general practitioners (GPs) and hospital specialists are traditionally conducted by phone. A conversation by phone where a GP seeks advice regarding a patient, who is unknown to the specialist, can have limitations. An e-consultation service for internal medicine allows GPs to consult an internal medicine specialist for clinical queries. In this study we evaluated GP use of internal medicine e-consultations. DESIGN Observational study. METHOD Eligible patients were all those for whom the GP used an internal medicine e-consultation, provided by Zuyderland Medical Centre, location Sittard-Geleen, the Netherlands, in the period 2017-2018. Data on patient demographics, content of the GP clinical query, and any preceding diagnostics were collated. Furthermore, the internal medicine specialist response was categorised, including the presence of any patient referral advice. RESULTS 136 (88.6%) of all 154 GPs in the region used an e-consultation at least once, and the clinical queries covered all areas of internal medicine. A total of 1047 eligible patients were discussed by GPs in an e-consultation; 19.6% of them attended the internal medicine out-patient clinic within three months of the index episode. The use of e-consultations by GPs led to a 70% reduction in referrals when compared to the situation where e-consultations were not available. CONCLUSION GPs used internal medicine e-consultations for a wide range of questions covering all areas of internal medicine. In more than 80% of cases, the GP continued to manage the patient, resulting in a reduction of the actual number of patient referrals to the internal medicine out-patient clinic.A 6-year-old boy, known with Potocki-Lupski syndrome (17p11.2 duplication), mild intellectual disability and constipation, presented with episodes of abdominal pain. His defecation pattern was normal with polyethylene glycol. Physical examination showed a hypertympanic distended abdomen. Extreme dilatation and elongation of the colon was seen on abdominal x-ray, corresponding with aerophagia.