Ulcerative eosinophilic stomatitis in three Cavalier King Charles spaniels.

Ulcerative eosinophilic stomatitis affecting three Cavalier King Charles spaniels is described. The lesions are similar in gross appearance to previously reported palatine eosinophilic granulomas, but histologically they lack granuloma formation. The cause of the lesions is not known. Treatment with corticosteroids led to the resolution of one case and partial resolution of a second. A third case resolved spontaneously without therapy.