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Giant cell arteritis (GCA) is the most frequent vasculitis affecting adults aged 50 years. Cardiac involvement in GCA is considered rare, and only a few cases of pericarditis have been reported. The aim of this study was to determine the characteristics and prognosis of GCA patients suffering from pericardial involvement at diagnosis.We conducted a single-centre, retrospective chart review of patients with GCA in internal medicine departments (from 2000 to 2020). Patients were identified through a centralized hospital database. We retrospectively collected demographic, clinicobiological, histological, imaging, treatment and outcome data. Patients with pericardial effusion, defined as an effusion visible on the CT-scan performed at GCA diagnosis were compared to those without pericardial involvement.Among the 250 patients with GCA, 23 patients (9.2%) had pericardial effusion on CT-scan. The comparison between the groups revealed similar distribution of age, gender, cranial symptoms and ocular ischaemic complications. Patients with pericardial effusion had a higher frequency of weight loss. They also had lower haemoglobin levels and higher platelet levels (p = 0.006 and p = 0.002, respectively), and they more frequently had positive temporal artery biopsy. There were no differences concerning the treatment, relapses, follow-up duration or deaths.This case series sheds light on GCA as a cause of unexplained pericardial effusion or symptomatic pericarditis among adults aged 50 years and elevated inflammatory biological markers. Fortunately, pericardial involvement is a benign GCA manifestation. In that context, the search for constitutional symptoms, cranial symptoms and associated signs of polymyalgia rheumatica is crucial for rapidly guiding GCA diagnosis.

Patients with sickle cell disease have an increased risk of venous thromboembolism (VTE) and with a mortality 2-fold higher. The anticoagulation of VTE in a young population is an important question. Indeed, hemorrhagic complications of anticoagulation may occur more frequently than in the general population. The use of a direct oral anticoagulant (DOAC) is not recommended for VTE in patients with sickle cell disease because those patients were not included in the clinical studies. We aimed to study the safety of using DOACs in a prospective cohort of patients with sickle cell disease and VTE. We prospectively followed the cohort of all sickle cell disease patients undergoing recent DOAC treatment for VTE at a sickle cell disease reference center. Twelve patients received rivaroxaban for VTE (eight women and four men). The median age was 27 years (20-45). The sickle cell disease variants included homozygous Hb SS (

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