Venous embryology: the key to understanding anomalous venous conditions

Byung-Boong LEE Professor of Surgery and Director, Center for Lymphedema and Vascular Malformations, George Washington University School of Medicine, Washington DC, USA ABSTRACT Venous embryology can explain many of the defects resulting in venous anomalies in later life, yet is often overlooked. Venous malformations are vascular malformations that only affect the venous system. They are classified into two different types depending on the embryological stage when the defective development occurs. Venous malformations originating during the early stage of embryogenesis are termed extratruncular, while those originating during the late stage of embryogenesis are classified as truncular. A defect at any point…

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Current management of visceral venous aneurysms

Athanasios D. GIANNOUKAS Giorgos S. SFYROERAS Department of Vascular Surgery, University Hospital of Larissa, University of Thessaly Medical School, Larissa, Greece ABSTRACT Visceral venous aneurysms are considered rare clinical entities with not variable pathogenesis, clinical presentation, natural history, and management. In an electronic search of the pertinent English and French literature, ninety-three reports were identified, including 176 patients with 198 visceral venous aneurysms. Patients’ ages ranged from 0 to 87 years, and there was no apparent male/female preponderance. The commonest location was the portal venous system (87 of 93 reports, 170 of 176 patients, 191 of 198 aneurysms). Portal system…

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