Related Experiment Video
Updated: May 8, 2026

Y-90 Radioembolization and PD-1 Inhibitor as Neoadjuvant Treatment in Hepatocellular Carcinoma
Published on: May 24, 2024
Heyde syndrome in a 71-year-old man who underwent chest radiotherapy at young age
V M Dos Santos1, L A M Dos Santos, A A D Modesto
1Catholic University and Medicine Department from Armed Forces Hospital (HFA), Brazília-DF, Brazil. vitorinomodestos@gmail.com
Abstract:
We report the case of a 71-year-old man with diagnosis of aortic valve stenosis for ten years, who came to hospital because of breathlessness during the previous two months and recent low intestinal hemorrhage. On admission, laboratory tests and upper gastrointestinal endoscopy and colonoscopy revealed anemia and bleeding cecal angiodysplasia. The echocardiography study showed a severe aortic stenosis. Classical Heyde syndrome is described as the association of aortic stenosis, bleeding gastrointestinal angiodysplasia and secondary anemia. The antecedent of mediastinal radiotherapy for treatment of Hodgkin's disease during his youth, and eventual late cardiac adverse effects that may include aortic or mitral valve disturbances are highlighted. Electrocoagulation with argonium was performed on the sites of active bleeding during the colonoscopy. In sequence, surgical replacement by bioprothesis was done on the aortic valve. The patient remains asymptomatic, under long-term outpatient surveillance, with normal control evaluations. The aim of this case study is to emphasize difficulties related to diagnosis, and to highlight the role of endoscopy and imaging studies to confirm a hypothesis of this underestimated condition.
Related Concept Videos
Biological Effects of Radiation
Cushing Syndrome I: Introduction
Cushing Syndrome II: Pathophysiology
Pulmonary Hypertension: Classification and Pathogenesis
There are various classifications for PH, each relating to different underlying causes and also...
Hyperthyroidism II: Pathophysiology
Pneumothorax II: Pathophysiology
