Fibroadnexal Hamartoma (WHO,1998) in a Golden Retriever

Abstract

Six year-old, female Golden Retriever presented with circumscribed, yellowish papillated plaque at the lateral trunk. Histopathologic examination revealed that the lesion was consisted of irregularly dilated hair follicles with numerous mature sebaceous glands surrounded by the connective tissues, the dilated apocrine glands, and the mature lipocytes at the dermis. Based of these findings, the lesion was diagnosed as fibroadnexal hamartoma (WHO,1998), and its similarity to organoid nevus in human was discussed.