Hindlimb lameness caused by systemic lymphosarcoma in a Warmblood mare

Equine lymphosarcoma is rare but has been reported in mediastinal lymph nodes, cutaneous nodules, the gastrointestinal system and peripheral lymph nodes. This report describes the clinical presentation of lymphosarcoma characterised by weight shifting, reluctance to ambulate or peripheral oedema. This case is extremely atypical in clinical presentation and justifies the need for consideration of lymphosarcoma when formulating a differential diagnosis of lameness with atypical presentation.