Abstract
A three-year-old, male Yorkshire terrier presented with nodules at the border area between the skin and nasus, and the auricula. The lesions around the nasus showed a petal-like alignment. A histopathological examination revealed inflammation at the upper dermis and adnexa. Those cells were predominantly histiocytes and lymphocytes with a few neutrophils. This dog was diagnosed as having Sterile Granuloma and Pyogranuloma Syndrome, and treated with prednisolone. Most of the lesions were improved, but recurrence was observed with its dose reduction. Griseofulvin was added, and then the lesions disappeared 4 weeks later. No recurrence was observed without any further treatment for 8 months.
