Posted in Web Deep Vein Thrombosis – StatPearls – NCBI Bookshelf February 19, 2025 A deep-vein thrombosis (DVT) is a blood clot that forms within the deep veins, usually of the leg, but can occur in the arms and the mesenteric and cerebral veins. Deep-vein thrombosis is a common and important disease. https://www.ncbi.nlm.nih.gov/books/NBK507708/