The history, clinical and histological features and response to treatment of a 15-year-old horse with cutaneous lymphoma are described. The mare had an 11 year history of multiple cutaneous nodules. A diagnosis of cutaneous lymphoma was made on histological examination of biopsy material taken on two separate occasions some 4 years apart. Subsequent immunohistochemical staining identified the cell lineage as T-lymphocytes. This is the first report of immunophenotypic characterisation of cutaneous lymphoma in the horse. The horse was treated with intralesional glucocorticoids and oral progestins, and complete resolution of the nodules resulted.
- Skin diseases