This document discusses chronic progressive lymphedema in draft horses. It begins by describing the lymphatic system and what lymphedema is, which is swelling caused by a buildup of fluid in tissues due to abnormalities in the lymphatic vessels. It then discusses chronic progressive lymphedema specifically in draft horses, noting that the primary cause is likely a congenital malformation of the lymphatics. The clinical signs and progression of the disease in horses are described, as well as the histological findings. Diagnosis involves clinical signs and imaging tests, while treatment focuses on wound care, bandaging, exercise, and manual lymph drainage to push fluid out of the tissues.