Abstract
A 10-year-old, castrated male, Persian cat was presented with alopecia, scaling and ulceration at the axilla and dorsal trunk. Histopathological examination revealed a diffuse dermal infiltration of small lymphocytes. Immunohistochemical analysis revealed diffuse infiltrations of CD3, CD4, CD5, CD8 and CD18 positive cells, and no clonality was identified. The lesions were not cured completely with systemic prednisolone and chlorambucil. Two years later after onset of the skin lesions, the cat was euthanized for renal failure. Necropsy showed nephrosclerosis and lymphocytic cholangiohepatitis, but no metastatic lesions in any organs were found. Based on these findings, this present dermatosis was considered as cutaneous lymphocytosis.
