• Urban W Geisthoff, Andreas H Mahnken, Ulrike W Denzer, André Kemmling, Christopher Nimsky, and Boris A Stuck.
• VASCERN HHT Reference Centre, Giessen and Marburg University Hospital; Department of Otorhinolaryngology, Head and Neck Surgery, Marburg University Hospital, Philipps University of Marburg; German Osler's Disease Self-Help Association, Berlin; Diagnostic and Interventional Radiology, Marburg University Hospital, Philipps University of Marburg; Department of Gastroenterology, Endocrinology, Metabolism, and Clinical Infectiology, Marburg University Hospital, Philipps University of Marburg; Department of Neuroradiology, Marburg University Hospital, Philipps University of Marburg; Department of Neurosurgery, Marburg University Hospital, Philipps University of Marburg.
• Dtsch Arztebl Int. 2024 Sep 6; 121 (18): 601607601-607.

BackgroundHereditary hemorrhagic telangiectasia (HHT, Rendu- Osler-Weber disease, or Osler's disease for short) is a systemic disease that can severely impair the quality of life and that requires interdisciplinary treatment. Among rare diseases, it is relatively common, with a prevalence of approximately 1/5000.MethodsThis review is based on publications retrieved by a selective literature search, including the two international guidelines on clinically relevant aspects of HHT.ResultsOn average, about two decades elapse between the initial symptoms and the diagnosis of HHT. 95% of patients have nosebleeds; these usually begin before age 20 but can occur at any time, from infancy to old age. The diagnosis is usually made on clinical grounds on the basis of the characteristic telangiectases, a positive family history, and possible involvement of the gastrointestinal tract, lungs, liver, and brain. Nosebleeds can sometimes be reduced by outpatient measures including counseling on keeping the nose moist (expert consensus), self-application of a nasal packing (which improves the quality of life, according to an online survey), and the prescription of tranexamic acid (reduction of nosebleeds from 17.3% [5.5; 27.6] to 54%). In particular, screening (expert consensus) for pulmonary vascular malformations (frequency 10-50%) can prevent many adverse outcomes. If pulmonary vascular malformations cannot be ruled out, antibiotic prophylaxis is recommended before medical procedures that can cause bacteremia (expert consensus).ConclusionBroad awareness of the condition, early diagnosis, and interdisciplinary treatment improve the quality of life and ultimate outcome of persons with HHT. Nevertheless, there are few options supported by good evidence for the appropriate treatment of this rare, often serious disease..

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